NCP705
500 mA
Manufacturer
onsemi
Category
Integrated Circuits (ICs)
Overview
Part: NCP705 from onsemi
Type: LDO Regulator
Key Specs:
- Output Current: 500 mA
- Input Voltage Range: 2.5 V to 5.5 V
- Quiescent Current: Typ. 13 µA
- Output Noise: 12 µVRMS (100 Hz to 100 kHz)
- Dropout Voltage: 230 mV Typical at 500 mA
- Output Voltage Accuracy: ±2%
- PSRR: 71 dB at 1 kHz
Features:
- Operating Input Voltage Range: 2.5 V to 5.5 V
- Available - Fixed Voltage Option: 0.8 V to 3.5 V
- Available - Adjustable Voltage Option: 0.8 V to 5.5 V-VDROP
- Reference Voltage 0.8 V
- Ultra-Low Quiescent Current of Typ. 13 µA
- Ultra-Low Noise: 12 µVRMS from 100 Hz to 100 kHz
- Very Low Dropout: 230 mV Typical at 500 mA
- ±2% Accuracy Over Load/Line/Temperature
- High PSRR: 71 dB at 1 kHz
- Internal Soft-Start to Limit the Turn-On Inrush Current
- Thermal Shutdown and Current Limit Protections
- Stable with a 1 µF Ceramic Output Capacitor
- Active Output Discharge for Fast Turn-Off
- These are Pb-Free Devices
Applications:
- PDAs, Mobile Phones, GPS, Smartphones
- Wireless Handsets, Wireless LAN, Bluetooth®, ZigBee®
- Portable Medical Equipment
- Other Battery Powered Applications
Package:
- WDFN6 CASE 511BR
- WDFN6 2x2 mm
Features
- Operating Input Voltage Range: 2.5 V to 5.5 V
- Available - Fixed Voltage Option: 0.8 V to 3.5 V
- Available - Adjustable Voltage Option: 0.8 V to 5.5 V-VDROP • Reference Voltage 0.8 V
A
- Ultra-Low Quiescent Current of Typ. 13 -
- Ultra-Low Noise: 12 -VRMS from 100 Hz to 100 kHz
- Very Low Dropout: 230 mV Typical at 500 mA
- ±2% Accuracy Over Load/Line/Temperature
- High PSRR: 71 dB at 1 kHz
- Internal Soft-Start to Limit the Turn-On Inrush Current
- Thermal Shutdown and Current Limit Protections
- Stable with a 1 -F Ceramic Output Capacitor
- Active Output Discharge for Fast Turn-Off
- These are Pb-Free Devices
Applications
- PDAs, Mobile Phones, GPS, Smartphones
- Wireless Handsets, Wireless LAN, Bluetooth®, ZigBee®
- Portable Medical Equipment
- Other Battery Powered Applications
Pin Configuration
| Pin No. | Pin Name - Fixed | Pin Name - Adjustable | Description |
|---|---|---|---|
| 1 | OUT | OUT | Regulated output voltage pin. A small 1 μF ceramic capacitor is needed from this pin to ground to assure stability. |
| 2 | N/C | ADJ | Feedback pin for set-up output voltage. Use resistor divider for voltage selection. |
| 3 | GND | GND | Power supply ground. Expose pad must be tied with GND pin. Soldered to the copper plane allows for effective heat dissipation. |
| 4 | EN | EN | Enable pin. Driving EN over 0.9 V turns on the regulator. Driving EN below 0.4 V puts the regulator into shutdown mode. |
| 5 | N/C | N/C | Not connected. This pin can be tied to ground to improve thermal dissipation. |
| 6 | IN | IN | Input pin. A small capacitor is needed from this pin to ground to assure stability. |
Table 2. ABSOLUTE MAXIMUM RATINGS
| Rating | Symbol | Value | Unit |
|---|---|---|---|
| Input Voltage (Note 1) | VIN | -0.3 V to 6 V | V |
| Output Voltage | VOUT | -0.3 V to VIN + 0.3 V | V |
| Enable Input | VEN | -0.3 V to VIN + 0.3 V | V |
| Adjustable Input | VADJ | -0.3 V to VIN + 0.3 V | V |
| Output Short Circuit Duration | tSC | Indefinite | s |
| Maximum Junction Temperature | TJ(MAX) | 150 | °C |
| Storage Temperature | TSTG | -55 to 150 | °C |
| ESD Capability, Human Body Model (Note 2) | ESDHBM | 2000 | V |
| ESD Capability, Machine Model (Note 2) | ESDMM | 200 | V |
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.
-
Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
-
This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC-Q100-002 (EIA/JESD22-A114) ESD Machine Model tested per AEC-Q100-003 (EIA/JESD22-A115) Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
Table 3. THERMAL CHARACTERISTICS (Note 3)
| Rating | Symbol | Value | Unit |
|---|---|---|---|
| Thermal Characteristics, WDFN6 2x2 mm | °C/W | ||
| Thermal Resistance, Junction-to-Air | θ_JA | 116.5 | °C/W |
| Thermal Resistance Parameter, Junction-to-Board | Ψ_JB | 30 | °C/W |
- Single component mounted on 1 oz, FR 4 PCB with 645 mm2 Cu area.
Table 4. ELECTRICAL CHARACTERISTICS
-40°C ≤ TJ ≤ 125°C; VIN = VOUT(NOM) + 0.5 V or 2.5 V, whichever is greater; VEN = 0.9 V, IOUT = 10 mA, CIN = COUT = 1 -F unless otherwise noted. Typical values are at TJ = +25°C. (Note 4)
| Parameter | Test Conditions | Symbol | Min | Typ | Max | Unit | |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 2.5 | 5.5 | V | |||
| Output Voltage Range (Adjustable) | VOUT | 0.8 | 5.5- VDO | V | |||
| Undervoltage Lock-out | VIN rising | UVLO | 1.2 | 1.6 | 1.9 | V | |
| Output Voltage Accuracy (Fixed) | VOUT + 0.5 V ≤ VIN | ≤ 5.5 V, IOUT = 0 - 500 mA | VOUT | -2 | +2 | % | |
| Reference Voltage | VREF | 0.8 | V | ||||
| Reference Voltage Accuracy | IOUT = 10 mA | VREF | -2 | +2 | % | ||
| Line Regulation | VOUT + 0.5 V ≤ VIN ≤ 4.5 V, IOUT = 10 mA VOUT + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA | RegLINE | 550 750 | V/V | |||
| Load Regulation | IOUT = 0 mA to 500 mA | RegLOAD | 12 | V/mA | |||
| Load Transient | IOUT = 1 mA to 500 mA or 500 mA to 1 mA in 1 s, COUT = 1 F | TranLOAD | ±120 | mV | |||
| Dropout Voltage (Note 5) | IOUT = 500 mA, VOUT(nom) = 2.8 V | VDO | 230 | 350 | mV | ||
| Output Current Limit | VOUT = 90% VOUT(nom) | NCP705 | ICL | 510 | 750 | 950 | mA |
| NCP705E (0°C ≤ TJ ≤ 70°C) | 600 | 750 | 950 | ||||
| Quiescent Current | IOUT = 0 mA | IQ | 13 | 25 | A | ||
| Ground Current | IOUT = 500 mA | IGND | 260 | A | |||
| Shutdown Current | VEN ≤ 0.4 V, TJ = +25°C | IDIS | 0.12 | A | |||
| VEN ≤ 0 V, VIN = 2.0 to 4.5 V, TJ = -40 to +85°C | IDIS | 0.55 | 2 | A | |||
| EN Pin Threshold Voltage High Threshold Low Threshold | VEN Voltage increasing VEN Voltage decreasing | VEN_HI VEN_LO | 0.9 | 0.4 | V | ||
| EN Pin Input Current | VEN = 5.5 V | IEN | 100 | 500 | nA | ||
| ADJ Pin Current | VADJ = 0.8 V | 1 | nA | ||||
| Turn-On Time | COUT = 1.0 F, from assertion EN pin to 98% VOUT(nom) | tON | 150 | s | |||
| Power Supply Rejection Ratio | VIN = 3.8 V, VOUT = 2.8 V (Fixed), IOUT = 500 mA | f = 100 Hz f = 1 kHz f = 10 kHz | PSRR | 73 71 56 | dB | ||
| Output Noise Voltage | VOUT = 2.5 V (Fixed), VIN = 3.5 V, IOUT = 500 mA f = 100 Hz to 100 kHz | VN | 12 | Vrms | |||
| Thermal Shutdown Temperature | Temperature increasing from TJ = +25°C | TSD | 160 | °C | |||
| Thermal Shutdown Hysteresis | Temperature falling from TSD | TSDH | - | 20 | - | °C |
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions.
- Performance guaranteed over the indicated operating temperature range by design and/or characterization. Production tested at TJ = TA = 25-C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 5. Characterized when VOUT falls 100 mV below the regulated voltage at VIN = VOUT(NOM) + 0.5 V.
| TYPICAL CHARACTERISTICS |
|---|
| ------------------------- |
| IOUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz - 100 kHz | 100 Hz - 100 kHz | |
| 10 mA | 19.06 | 18.21 |
| 100 mA | 15.99 | 15.04 |
| 300 mA | 14.42 | 13.39 |
| 500 mA | 13.70 | 12.60 |
| IOUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz – 100 kHz | 100 Hz – 100 kHz | |
| 10 mA | 16.17 | 15.28 |
| 100 mA | 16.41 | 15.65 |
| 300 mA | 14.94 | 14.10 |
| 500 mA | 14.08 | 13.11 |
Figure 4. Output Voltage Noise Spectral Density for VOUT = 0.8 V, COUT = 10 -F
| I_OUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz – 100 kHz | 100 Hz – 100 kHz | |
| 10 mA | 18.12 | 15.39 |
| 100 mA | 16.42 | 13.50 |
| 300 mA | 16.35 | 12.47 |
| 500 mA | 16.00 | 12.10 |
Figure 5. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 1 -F
| I_OUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz - 100 kHz | 100 Hz - 100 kHz | |
| 1 mA | 17.35 | 14.07 |
| 100 mA | 17.43 | 14.29 |
| 300 mA | 16.55 | 13.33 |
| 500 mA | 16.48 | 13.20 |
Figure 6. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 10 -F
| VOUT | RMS Output Noise (μV) | |---|---|---| | | 10 Hz - 100 kHz | 100 Hz - 100 kHz | | 1.5 V | 31.40 | 30.33 | | 3.3 V | 49.14 | 44.30 |
Figure 7. Output Voltage Noise Spectral Density for Adjustable Version – Different Output Voltage
| IOUT | RMS Output Noise (μV) (10 Hz – 100 kHz) | RMS Output Noise (μV) (100 Hz – 100 kHz) |
|---|---|---|
| none | 50.17 | 43.85 |
| 100 pF | 46.90 | 40.39 |
| 1 nF | 36.92 | 27.99 |
| 10 nF | 27.02 | 18.31 |
Electrical Characteristics
-40°C ≤ TJ ≤ 125°C; VIN = VOUT(NOM) + 0.5 V or 2.5 V, whichever is greater; VEN = 0.9 V, IOUT = 10 mA, CIN = COUT = 1 -F unless otherwise noted. Typical values are at TJ = +25°C. (Note 4)
| Parameter | Test Conditions | Symbol | Min | Typ | Max | Unit | |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 2.5 | 5.5 | V | |||
| Output Voltage Range (Adjustable) | VOUT | 0.8 | 5.5- VDO | V | |||
| Undervoltage Lock-out | VIN rising | UVLO | 1.2 | 1.6 | 1.9 | V | |
| Output Voltage Accuracy (Fixed) | VOUT + 0.5 V ≤ VIN | ≤ 5.5 V, IOUT = 0 - 500 mA | VOUT | -2 | +2 | % | |
| Reference Voltage | VREF | 0.8 | V | ||||
| Reference Voltage Accuracy | IOUT = 10 mA | VREF | -2 | +2 | % | ||
| Line Regulation | VOUT + 0.5 V ≤ VIN ≤ 4.5 V, IOUT = 10 mA VOUT + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA | RegLINE | 550 750 | V/V | |||
| Load Regulation | IOUT = 0 mA to 500 mA | RegLOAD | 12 | V/mA | |||
| Load Transient | IOUT = 1 mA to 500 mA or 500 mA to 1 mA in 1 s, COUT = 1 F | TranLOAD | ±120 | mV | |||
| Dropout Voltage (Note 5) | IOUT = 500 mA, VOUT(nom) = 2.8 V | VDO | 230 | 350 | mV | ||
| Output Current Limit | VOUT = 90% VOUT(nom) | NCP705 | ICL | 510 | 750 | 950 | mA |
| NCP705E (0°C ≤ TJ ≤ 70°C) | 600 | 750 | 950 | ||||
| Quiescent Current | IOUT = 0 mA | IQ | 13 | 25 | A | ||
| Ground Current | IOUT = 500 mA | IGND | 260 | A | |||
| Shutdown Current | VEN ≤ 0.4 V, TJ = +25°C | IDIS | 0.12 | A | |||
| VEN ≤ 0 V, VIN = 2.0 to 4.5 V, TJ = -40 to +85°C | IDIS | 0.55 | 2 | A | |||
| EN Pin Threshold Voltage High Threshold Low Threshold | VEN Voltage increasing VEN Voltage decreasing | VEN_HI VEN_LO | 0.9 | 0.4 | V | ||
| EN Pin Input Current | VEN = 5.5 V | IEN | 100 | 500 | nA | ||
| ADJ Pin Current | VADJ = 0.8 V | 1 | nA | ||||
| Turn-On Time | COUT = 1.0 F, from assertion EN pin to 98% VOUT(nom) | tON | 150 | s | |||
| Power Supply Rejection Ratio | VIN = 3.8 V, VOUT = 2.8 V (Fixed), IOUT = 500 mA | f = 100 Hz f = 1 kHz f = 10 kHz | PSRR | 73 71 56 | dB | ||
| Output Noise Voltage | VOUT = 2.5 V (Fixed), VIN = 3.5 V, IOUT = 500 mA f = 100 Hz to 100 kHz | VN | 12 | Vrms | |||
| Thermal Shutdown Temperature | Temperature increasing from TJ = +25°C | TSD | 160 | °C | |||
| Thermal Shutdown Hysteresis | Temperature falling from TSD | TSDH | - | 20 | - | °C |
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions.
- Performance guaranteed over the indicated operating temperature range by design and/or characterization. Production tested at TJ = TA = 25-C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 5. Characterized when VOUT falls 100 mV below the regulated voltage at VIN = VOUT(NOM) + 0.5 V.
| TYPICAL CHARACTERISTICS |
|---|
| ------------------------- |
| IOUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz - 100 kHz | 100 Hz - 100 kHz | |
| 10 mA | 19.06 | 18.21 |
| 100 mA | 15.99 | 15.04 |
| 300 mA | 14.42 | 13.39 |
| 500 mA | 13.70 | 12.60 |
| IOUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz – 100 kHz | 100 Hz – 100 kHz | |
| 10 mA | 16.17 | 15.28 |
| 100 mA | 16.41 | 15.65 |
| 300 mA | 14.94 | 14.10 |
| 500 mA | 14.08 | 13.11 |
Figure 4. Output Voltage Noise Spectral Density for VOUT = 0.8 V, COUT = 10 -F
| I_OUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz – 100 kHz | 100 Hz – 100 kHz | |
| 10 mA | 18.12 | 15.39 |
| 100 mA | 16.42 | 13.50 |
| 300 mA | 16.35 | 12.47 |
| 500 mA | 16.00 | 12.10 |
Figure 5. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 1 -F
| I_OUT | RMS Output Noise (μV) | |
|---|---|---|
| 10 Hz - 100 kHz | 100 Hz - 100 kHz | |
| 1 mA | 17.35 | 14.07 |
| 100 mA | 17.43 | 14.29 |
| 300 mA | 16.55 | 13.33 |
| 500 mA | 16.48 | 13.20 |
Figure 6. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 10 -F
| VOUT | RMS Output Noise (μV) | |---|---|---| | | 10 Hz - 100 kHz | 100 Hz - 100 kHz | | 1.5 V | 31.40 | 30.33 | | 3.3 V | 49.14 | 44.30 |
Figure 7. Output Voltage Noise Spectral Density for Adjustable Version – Different Output Voltage
| IOUT | RMS Output Noise (μV) (10 Hz – 100 kHz) | RMS Output Noise (μV) (100 Hz – 100 kHz) |
|---|---|---|
| none | 50.17 | 43.85 |
| 100 pF | 46.90 | 40.39 |
| 1 nF | 36.92 | 27.99 |
| 10 nF | 27.02 | 18.31 |
Absolute Maximum Ratings
| Rating | Symbol | Value | Unit |
|---|---|---|---|
| Input Voltage (Note 1) | VIN | -0.3 V to 6 V | V |
| Output Voltage | VOUT | -0.3 V to VIN + 0.3 V | V |
| Enable Input | VEN | -0.3 V to VIN + 0.3 V | V |
| Adjustable Input | VADJ | -0.3 V to VIN + 0.3 V | V |
| Output Short Circuit Duration | tSC | Indefinite | s |
| Maximum Junction Temperature | TJ(MAX) | 150 | °C |
| Storage Temperature | TSTG | -55 to 150 | °C |
| ESD Capability, Human Body Model (Note 2) | ESDHBM | 2000 | V |
| ESD Capability, Machine Model (Note 2) | ESDMM | 200 | V |
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.
-
Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
-
This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC-Q100-002 (EIA/JESD22-A114) ESD Machine Model tested per AEC-Q100-003 (EIA/JESD22-A115) Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
Thermal Information
| Rating | Symbol | Value | Unit |
|---|---|---|---|
| Thermal Characteristics, WDFN6 2x2 mm | °C/W | ||
| Thermal Resistance, Junction-to-Air | θ_JA | 116.5 | °C/W |
| Thermal Resistance Parameter, Junction-to-Board | Ψ_JB | 30 | °C/W |
- Single component mounted on 1 oz, FR 4 PCB with 645 mm2 Cu area.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| NCP705E | onsemi | — |
| NCP705MT33TCG | onsemi | 6-WDFN Exposed Pad |
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