MIC23050-SYML

Synchronous Buck Regulator

The MIC23050-SYML is a synchronous buck regulator from Micrel, Inc.. View the full MIC23050-SYML datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

MIC23050-SYML shares its datasheet with MIC23050, whose page lists every part number it covers.

Official MIC23050-SYML datasheet (PDF) — the source this page was extracted from.

Manufacturer

Micrel, Inc.

MIC23050-SYML Key Specifications

Parameter	Value
Inductor Range	0.47μH to 2.2μH
Output Current	600mA
Peak Efficiency	>93%
Soft-Start Time	650μs typical
Shutdown Current	0.01μA typical (4μA max)
Efficiency At 1mA	~89%
Quiescent Current	20μA typical (32μA max)
Package Dimensions	2mm x 2mm
Current Limit (PWM)	1A typical (0.65A to 1.7A)
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
Output Voltage Accuracy	±2.5%
PWM Switch On-Resistance	0.45Ω (PMOS), 0.5Ω (NMOS)
UVLO Threshold (Turn-On)	2.55V typical
Thermal Resistance (θJA)	90°C/W
Junction Temperature Range	-40°C to +125°C
Output Voltage (This Part)	3.3V (fixed)

MIC23050-SYML 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-SYML 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-SYML Applications

Cellular phones
Digital cameras
Portable media players
Wireless LAN cards
WiFi/WiMax/WiBro modules
USB-powered devices

____________________________________________________________________________________________________________

MIC23050-SYML 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-SYML 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-SYML Absolute Maximum Ratings

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-SYML 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-SYML 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	Micrel, Inc.	—
MIC23050-4YML	Micrel, Inc.	MLF-8 2x2mm
MIC23050-CYML	Micrel, Inc.	MLF-8 2x2mm
MIC23050-GYML	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) datasheets All Micrel datasheets (40)

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