MIC23050
Synchronous Buck RegulatorThe MIC23050 is a synchronous buck regulator from Micrel, Inc.. View the full MIC23050 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official MIC23050 datasheet (PDF) — the source this page was extracted from.
Manufacturer
Micrel, Inc.Category
Switching Regulators (Buck)MIC23050 Key Specifications
| Parameter | Value |
|---|---|
| Efficiency | >93% peak, ~89% at 1mA |
| Inductor Range | 0.47μH to 2.2μH |
| Output Current | 600mA |
| UVLO Threshold | 2.55V typical (turn-on) |
| Soft-Start Time | 650μs typical |
| Shutdown Current | 0.01μA typical (4μA max) |
| Quiescent Current | 20μA typical (32μA max) |
| Package Dimensions | 2mm x 2mm |
| Input Voltage Range | 2.7V to 5.5V |
| Switching Frequency | 4MHz typical (3.4MHz to 4.6MHz) |
| Output Voltage Options | 0.72V to 3.3V (fixed) |
| Output Voltage Accuracy | ±2.5% |
| Current Limit (PWM Mode) | 1A typical (0.65A to 1.7A) |
| Thermal Resistance (θJA) | 90°C/W |
| Junction Temperature Range | -40°C to +125°C |
MIC23050 Overview
Part: MIC23050 (ordered as MIC2305-1.5YML-TR) — Micrel
Type: Synchronous Buck (Step-Down) Regulator
Description: 2.7–5.5 V input, 600 mA PWM synchronous buck regulator with HyperLight Load™ switching, 4 MHz switching frequency, 20 μA typical quiescent current and >93% peak efficiency.
Operating Conditions:
- Supply voltage: 2.7–5.5 V
- Operating junction temperature: -40 to +125 °C
- Logic input voltage (VEN): 0 V to VIN
- Inductor range: 0.47–2.2 µH
Absolute Maximum Ratings:
- Max supply voltage (VIN): 6 V
- Output switch voltage (VSW): 6 V
- Output switch current (ISW): 2 A
- Max junction temperature: +150 °C
- Storage temperature: -65 to +150 °C
- ESD rating (HBM): 3 kV
Key Specs:
- Quiescent current (HyperLight Load mode, IOUT = 0 mA): 20 μA typ, 32 μA max
- Shutdown current (VIN = 5.5 V, VEN = 0 V): 0.01 μA typ, 4 μA max
- Output voltage accuracy (VIN = 3.0 V, ILOAD = 20 mA): ±2.5%
- Switching frequency (ILOAD = 120 mA): 4 MHz typ (3.4–4.6 MHz)
- PWM current limit (SNS = 0.9×VNOM): 1 A typ (0.65–1.7 A)
- PWM switch on-resistance: 0.45 Ω (PMOS), 0.5 Ω (NMOS) typ at 100 mA
- UVLO turn-on threshold: 2.55 V typ (2.45–2.65 V), 100 mV hysteresis
- Soft-start time (VOUT = 90%): 650 μs typ
- Over-temperature shutdown: 165 °C typ, 20 °C hysteresis
- Thermal resistance, 2 mm x 2 mm MLF-8: θJA 90 °C/W, θJC 45 °C/W
Features:
- Fixed output voltage options from 0.72 V to 3.3 V, no external feedback network
- HyperLight Load™ architecture with ultra-fast transient response
- ~89% efficiency at 1 mA load
- Output ripple of about 25 mVPP in HyperLight Load mode and 3 mV in full PWM mode
- Micropower shutdown
- Tiny inductor and small output capacitor, sub-1 mm height
- Built-in soft-start
- Thermal shutdown
Applications:
- Cellular phones
- Digital cameras
- Portable media players
- Wireless LAN cards
- WiFi/WiMax/WiBro modules
- USB-powered devices
Package:
- 8-pin 2 mm x 2 mm MLF® (Pb-free, green RoHS compliant)
MIC23050 Features
- Input voltage: 2.7V to 5.5V
HyperLight Load™
- 600mA output current
- Fixed output voltage from 0.72V to 3.3V
- Ultra-fast transient response
- 20μA typical quiescent current
- 4MHz in PWM in constant-current mode
- 0.47μH to 2.2μH inductor
- Low voltage output ripple
- -25mVPP in HyperLight Load™ mode
- -3mV output voltage ripple in full PWM mode
-
93% efficiency
- ~89% at 1mA
- Micropower shutdown
- Available in 8-pin 2mm x 2mm MLF ®
- -40 ° C to +125 ° C junction temperature range
MIC23050 Applications
- Cellular phones
- Digital cameras
- Portable media players
- Wireless LAN cards
- WiFi/WiMax/WiBro modules
- USB-powered devices
____________________________________________________________________________________________________________
MIC23050 Pin Configuration
| Pin Number | Pin Name | Pin Name |
|---|---|---|
| 1 | SW | Switch (Output): Internal power MOSFET output switches. |
| 2 | EN | Enable (Input). Logic low will shut down the device, reducing the quiescent current to less than 4μA. Do not leave floating. |
| 3 | NC | No Connect. |
| 4 | SNS | Connect to V OUT to sense output voltage. |
| 5 | CFF | Feed Forward Capacitor. Connect a 560pF capacitor from V OUT to CFF pin. |
| 6 | AGND | Analog Ground. |
| 7 | VIN | Supply Voltage (Input): Requires bypass capacitor to GND. |
| 8 | PGND | Power Ground. |
8-Pin 2mm x 2mm MLF ® (ML) (Top View)
MIC23050 Electrical Characteristics
TA = 25 ° C with VIN = VEN = 3.6V; L = 1μH; CFF = 560pF; COUT = 4.7μF; IOUT = 20mA unless otherwise specified. Bold values indicate -40°C ≤ TJ ≤ +125°C.
| Parameter | Condition | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Supply Voltage Range | 2.7 | 5.5 | V | ||
| Undervoltage Lockout Threshold | (turn-on) | 2.45 | 2.55 | 2.65 | V |
| UVLO Hysteresis | 100 | mV | |||
| Quiescent Current, Hyper LL Mode | I OUT = 0mA , V SNS > 1.2*V OUT nominal | 20 | 32 | μA | |
| Shutdown Current | V IN = 5.5V; V EN = 0V; | 0.01 | 4 | μA | |
| Output Voltage Accuracy | V IN = 3.0V, I LOAD = 20mA | -2.5 | +2.5 | % | |
| Current Limit in PWM Mode | SNS = 0.9*V NOM | 0.65 | 1 | 1.7 | A |
| Output Voltage Line Regulation | V IN = 3.0V to 5.5V, I LOAD = 20mA | 0.5 | %/V | ||
| Output Voltage Load Regulation | 20mA < I LOAD < 500mA, | 0.3 | % | ||
| Maximum Duty Cycle | SNS ≤ V NOM | 80 | 89 | % | |
| PWM Switch ON-Resistance | I SW = 100mA PMOS I SW = - 100mA NMOS | 0.45 0.5 | Ω Ω | ||
| Frequency | I LOAD = 120mA | 3.4 | 4 | 4.6 | MHz |
| Soft-Start Time | V OUT = 90% | 650 | μs | ||
| Enable Threshold | (turn-on) | 0.5 | 0.8 | 1.2 | V |
| Enable Hysteresis | 35 | mV | |||
| Enable Input Current | 0.1 | 2 | μA | ||
| Over-Temperature Shutdown | 165 | ° C | |||
| Over-Temperature Shutdown Hysteresis | 20 | ° C |
MIC23050 Absolute Maximum Ratings
C
| Parameter | Limit |
|---|---|
| Supply Voltage (V IN ) | 6V |
| Output Switch Voltage (V SW ) | 6V |
| Output Switch Current (I SW ) | 2A |
| Logic Input Voltage (V EN , V LQ ) | V IN to -0.3V |
| Junction Temperature (T J ) | + 150 ° C |
| Storage Temperature Range (T s ) | -65°C to +150°C |
| ESD Rating (3) | 3kV |
MIC23050 Typical Application
HyperLight Load is a trademark of Micrel, Inc.
y, Inc. MLF and Micro LeadFrame are registered trademarks of Amkor Technolog Protected by US Patent No. 7064531
l +1 (408) 944-0800 · fax + 1 (408) 474-1000 · http://www.micrel.com Micrel Inc. · 2180 Fortune Drive · San Jose, CA 95131 · USA · te
MIC23050 Package Information
8-Pin 2mm x 2mm MLF ® (ML)
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| MIC23050-4YML | Micrel, Inc. | MLF-8 2x2mm |
| MIC23050-CYML | Micrel, Inc. | MLF-8 2x2mm |
| MIC23050-GYML | Micrel, Inc. | MLF-8 2x2mm |
| MIC23050-SYML | Micrel, Inc. | MLF-8 2x2mm |
Other Switching Regulators (Buck)
- TPS54302 – Texas Instruments, Synchronous Step-Down Converter
- MAX20730 – Analog Devices, Synchronous Switching Regulator
- TLV62568 – Texas Instruments, Synchronous Buck Converter
- LM2596 – onsemi, Step-Down Voltage Regulator
- TPS562200 – Texas Instruments, Synchronous Buck Converter
- AP63203WU – Diodes Incorporated, Synchronous Buck Converter
- TPS54202 – Texas Instruments, Synchronous Buck Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
All Switching Regulators (Buck) datasheetsAll Micrel datasheets (40)
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