MAX1595：Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump

The MAX1595 charge-pump regulator generates either 3.3V or 5V from a 1.8V to 5.5V input. The unique control architecture allows the regulator to step up or step down the input voltage to maintain output regulation. The 1MHz switching frequency, combined with a unique control scheme, allows the use of a ceramic capacitor as small as 1µF for 125mA of output current. The complete regulator requires three external capacitors—no inductor is needed. The MAX1595 is specifically designed to serve as a high-power, high- efficiency auxiliary supply in applications that demand a compact design. The MAX1595 is offered in space-saving 8-pin µMAX® and high-power 12-pin TQFN packages.

Key Features

Ultra-Small: Requires Only Three Ceramic Capacitors
No Inductors Required
Up to 125mA Output Current
Regulated ±3% Output Voltage
1MHz Switching Frequency
1.8V to 5.5V Input Voltage
220µA Quiescent Current
0.1µA Shutdown Current
Load Disconnect in Shutdown

MAX1595: Typical Operating Circuit

Applications/Uses

3.3V to 5V Local Conversion Applications
3V to 5V GSM SIMM Cards
Backup Battery Boost Converters
Battery-Powered Applications
Flash Memory Supplies
Miniature Equipment
PCMCIA Cards
White LED Power

DataSheet

title	Download file
MAX1595 Data Sheet	MAX1595.pdf

Parametrics

Part Number	Topology	V_IN (V)	V_IN (V)	I_CC (mA)	Unadj. V_OUT (V)	I_OUT (A)	Oper. Freq. (kHz)	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Topology	min	max	max	Unadj. V_OUT (V)	typ	Oper. Freq. (kHz)	Oper. Temp. (°C)	Package/Pins	See Notes
MAX1595	Regulated	1.8	5.5	0.22	3.3 5	0.125	1000	-40 to +85 0 to +70	µMAX/8 QFN/12 TQFN/12	$1.53 @1k

Quality and Environmental Data

MAX1595.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX1595EGC33	No Longer Available		QFN,;12 pin;16 mm²	-40°C to +85°C	No
MAX1595EGC33-T	No Longer Available		QFN;	-40°C to +85°C	See data sheet
MAX1595EGC50	No Longer Available		QFN,;12 pin;16 mm²	-40°C to +85°C	No
MAX1595EGC50-T	No Longer Available		QFN;	-40°C to +85°C	See data sheet
MAX1595ETC33	No Longer Available	MAX1595ETC33+	TQFN,;12 pin;16.8 mm²	-40°C to +85°C	No
MAX1595ETC33+	Active		TQFN,;12 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX1595ETC33+T	Active		TQFN,;12 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX1595ETC33-T	No Longer Available	MAX1595ETC33+T	TQFN,;12 pin;16.8 mm²	-40°C to +85°C	No
MAX1595ETC50	No Longer Available	MAX1595ETC50+	TQFN,;12 pin;16.8 mm²	-40°C to +85°C	No
MAX1595ETC50+	Active		TQFN,;12 pin;16.8 mm²	-40°C to +85°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX1595ETC50+T	Active		TQFN,;12 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX1595ETC50-T	No Longer Available	MAX1595ETC50+T	TQFN,;12 pin;16.8 mm²	-40°C to +85°C	No
MAX1595EUA33	No Longer Available	MAX1595EUA33+	µMAX,;8 pin;15.6 mm²	-40°C to +85°C	No
MAX1595EUA33+	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
MAX1595EUA33+T	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
MAX1595EUA33-T	No Longer Available	MAX1595EUA33+T	uMAX;8 pin	-40°C to +85°C	See data sheet
MAX1595EUA50	No Longer Available	MAX1595EUA50+	µMAX,;8 pin;15.6 mm²	-40°C to +85°C	No
MAX1595EUA50+	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
MAX1595EUA50+T	Active		µMAX,;8 pin;15.6 mm²	-40°C to +85°C	Lead Free
MAX1595EUA50-T	No Longer Available	MAX1595EUA50+T	uMAX;8 pin	-40°C to +85°C	See data sheet