TPS922050D1DSGR
The TPS922050D1DSGR is an electronic component from Texas Instruments. View the full TPS922050D1DSGR datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Integrated Circuits (ICs)
Package
8-WFDFN Exposed Pad
Lifecycle
Active
Key Specifications
| Parameter | Value |
|---|---|
| Applications | Backlight, Lighting, Signage |
| Current - Output / Channel | 1A |
| Dimming | PWM |
| Frequency | 1MHz |
| Height | 800 µm |
| Internal Switch(s) | Yes |
| Length | 2 mm |
| Lifecycle Status | Production (Last Updated: 2 days ago) |
| Manufacturer Lifecycle Status | ACTIVE (Last Updated: 2 days ago) |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Number of Pins | 8 |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 8-WFDFN Exposed Pad |
| RoHS | Compliant |
| Supplier Device Package | 8-WSON (2x2) |
| Thickness | 750 µm |
| Topology | Buck |
| Topology | Step-Down (Buck) |
| Type | DC DC Regulator |
| Voltage - Output | 0V ~ 63V |
| Input Voltage (Max) | 65V |
| Voltage - Supply (Min) | 4.5V |
| Width | 2 mm |
Overview
The TPS92205x family is a 1A / 2A non-synchronous Boost / Buck-Boost LED driver with 4.5V to 65V wide input range. By integrating the low-side NMOS, the device is capable of driving LEDs with high power density and high efficiency. The device also supports common anode anodeconnection and single layer PCB. The switching frequency is set at 400kHz or 1MHz.
The TPS92205x family support PWM dimming by configuring through the DIM input pins by means of simple high and low signals. The TPS92205x family support analog dimming by configuring through the DIM input pins by means of analog voltage signals. The device adopts an adaptive off-time current mode control along with smart and accurate sampling to enable fast PWM dimming and achieve high dimming ratio.
The TPS92205x family also provides multiple systematic protections, including LED open and short, switching FET open and short, sense resistor open and short, and thermal shutdown.
Features
- 4.5V to 65V wide input range
- LED common anode connection
- Integrated 300mΩ MOSFET:
- -Typical current limit (1.6A / 3.2A)
- -Switching frequency (400kHz / 1MHz)
- Advanced dimming options:
- -Analog dimming (200:1)
- -Fast PWM dimming (50ns pulse width)
- Full protection features:
- -LED open and short protection
- -Switching FET open and short protection
- -External component failure protection
- -Cycle-by-cycle current limit
- -Thermal shutdown
- Package: WSON-8, HVSSOP-8, SOT583
Applications
- Constant illumination:
- -Indoor and outdoor lighting
- -Appliance lighting
- -Cold/warm WLED lighting
- -Emergency and signage lighting
- -Security floodlight
- -LED bulb and lamp
- -LCD backlight
- Instant illumination:
- -Machine vision and camera flash
- -Fire alarm and strobe
Simplified Schematic
Simplified Schematic
Pin Configuration
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | GND | - | |
| 2 | VIN | - | |
| 3 | DIM | - | |
| 4 | VCC | - | |
| 5 | COMP | - | |
| 6 | CSP | - | |
| 7 | CSN | - | |
| 8 | SW | - |
Electrical Characteristics
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containingit. TJ = -40°C to +125°C, VIN = 7V, (unlessotherwise noted).
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| INPUT SUPPLY | INPUT SUPPLY | INPUT SUPPLY | INPUT SUPPLY | INPUT SUPPLY | INPUT SUPPLY | INPUT SUPPLY |
| Rising V IN | 3.0 | 3.2 | 3.4 | V | ||
| V VIN_UVLO | V IN undervoltage lockout Hysteresis | Falling V IN | 2.8 | 3.0 0.2 | 3.2 | V V |
| I OFF | PWM off quiesent current from V IN | V DIM = 0V, device enabled | 1.0 | 1.3 | mA | |
| I OP | Normal operating current | 400kHz switching frequency | 2.3 | mA | ||
| I OP | Normal operating current | 1MHz switching frequency | 3.5 | mA | ||
| V VCC | Internal LDO output voltage | I VCC = 5mA | 5.0 | 5.15 | 5.3 | V |
| I VCC_LIM | Internal LDO output current limit | 15 | 20 | 26 | mA | |
| DIMMING | DIMMING | DIMMING | DIMMING | DIMMING | DIMMING | DIMMING |
| V PWM_L | DIM low-level input voltage (D1 version) | 0.4 | V | |||
| V PWM_H | DIM high-level input voltage (D1 version) | 1.2 | V | |||
| t PWM_OUT_ON | PWM output minimum on time (D1 version) | 100 | ns | |||
| t PWM_IN_ON | PWM input minimum on time (D1 verison) | 100 | ns | |||
| V ADIM | DIM input voltage range (D2 version) | 0 | 2.2 | V | ||
| FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER | FEEDBACK AND ERROR AMPLIFIER |
| g M(ea) | Transconductance gain | V DIM = 2V, V CSP-CSN = 200mV | 205 | 265 | 325 | μA/V |
| I COMP | Source/sink current | V DIM = 2V, V CSP-CSN = 200mV ± 200mV | ±24 | ±40 | ±56 | μA |
| V REF | CSP-CSN pin voltage | V DIM = 2V | 193 | 200 | 207 | mV |
| V REF | CSP-CSN pin voltage | V DIM = 0.2V | 18.5 | 20 | 21.5 | mV |
| I LEAK_CSP/N | CSP+CSN pin leakage current | V IN = 60V, V DIM = 2V | 48 | μA | ||
| I LEAK_CSP/N | CSP+CSN pin leakage current | V IN = 60V, V DIM = 0V | 15 | μA | ||
| POWER STAGE | POWER STAGE | POWER STAGE | POWER STAGE | POWER STAGE | POWER STAGE | POWER STAGE |
| R DSON | Switching FET on resistance | V IN ≥ 5V | 300 | mΩ | ||
| t min_ON | Switching FET minimum on time | 140 | 160 | ns | ||
| t min_OFF | Switching FET minimum off time | 140 | 160 | ns | ||
| f SW | Switching FET frequency (TPS922051, TPS922050DRLR) | 0.4 | MHz | |||
| f SW | Switching FET frequency (TPS922050DSGR, TPS922050DGNR) | 1.0 | MHz | |||
| CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT | CURRENT LIMIT |
| I LIM | Switching FET cycle-by-cycle current limit (TPS922050) | 1.4 | 1.6 | 1.8 | A | |
| I LIM | Switching FET cycle-by-cycle current limit (TPS922051) | 2.8 | 3.2 | 3.6 | A | |
| THERMAL PROTECTION | THERMAL PROTECTION Thermal shutdown temperature | THERMAL PROTECTION | THERMAL PROTECTION | THERMAL PROTECTION 165 | THERMAL PROTECTION | THERMAL PROTECTION °C |
| T TSD | Hysteresis | 15 | °C |
Absolute Maximum Ratings
over operating ambient temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Voltage on pins VIN, CSP, CSN, SW | -0.3 | 65 | V | |
| Voltage on pins VCC, DIM, COMP | -0.3 | 5.5 | V | |
| T J | Junction temperature | -40 | 125 | °C |
| T stg | Storage temperature | -65 | 150 | °C |
Recommended Operating Conditions
over operating ambient temperature range (unless otherwise noted)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V IN | Supply voltage range | 4.5 | 63 | V |
| V SW | Switching node voltage range | 0 | 63 | V |
| V CSP , V CSN | Sense common-mode voltage range | 0 | 63 | V |
| V VCC | LDO output voltage range | 0 | 5 | V |
| V DIM | Dimming voltage range | 0 | 5 | V |
| V COMP | Compensation capacitor voltage range | 0 | 5 | V |
| T A | Operating ambient temperature | -40 | 85 | °C |
Thermal Information
| METRIC (1) | THERMAL | TPS922050/1 WSON | TPS922050/1 HVSSOP | TPS922050 SOT 8 PINS | UNIT |
|---|---|---|---|---|---|
| 8 PINS | 8 PINS | ||||
| R θJA | Junction-to-ambient thermal resistance | 66.9 | 47.8 | 113.1 | °C/W |
| R θJC(top) | Junction-to-case (top) thermal resistance | 79.2 | 74.1 | 41.9 | °C/W |
| R θJB | Junction-to-board thermal resistance | 31.1 | 20.4 | 24 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 2.2 | 4.6 | 1 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 31.1 | 20.4 | 23.6 | °C/W |
Typical Application
The TPS922050/1 is typically used as a Buck converter to drive one or more LEDs from an input from 4.5V to 63V range.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| TPS922050D1 | Texas Instruments | — |
| TPS922050D1DGNR | Texas Instruments | |
| TPS922050D1DRLR | Texas Instruments | — |
| TPS922050D1DRLR.A | Texas Instruments | — |
| TPS922050D1DSGR.A | Texas Instruments | — |
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