Specification	R1272S011A-E2-FE

Clock Sync	Yes
Control Features	Enable
Frequency - Switching (Max)	1 MHz
Frequency - Switching (Min)	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	18-LFSOP, 18-HSOP
Package Width	4.4 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	34 V
Voltage - Supply (Vcc/Vdd) Minimum	4 V

R1272 Series

Part	Package Name	Package Features	Package Width	Package Length	Control Features	Clock Sync	Output Configuration	Output Type	Function	Frequency - Switching (Min)	Frequency - Switching (Max)	Number of Outputs	Topology	Mounting Type	Synchronous Rectifier	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Operating Temperature (Max)	Operating Temperature (Min)	Output Phases
Nisshinbo Micro Devices Inc. R1272S011A-E2-FE	18-HSOP 18-LFSOP	Exposed Pad	4.4 mm	0.173 in	Enable	Yes	Positive	Transistor Driver	Step-Down	250 kHz	1 MHz	1	Buck	Surface Mount	Yes	34 V	4 V	125 °C	-40 °C	1
Nisshinbo Micro Devices Inc. R1272S032A-E2-FE	18-HSOP 18-LFSOP	Exposed Pad	4.4 mm	0.173 in	Current Limit Enable Power Good Soft Start	Yes	Positive	Transistor Driver	Step-Down	250 kHz	1 MHz	1	Buck	Surface Mount	Yes	34 V	4 V	105 °C	-40 °C	1
Nisshinbo Micro Devices Inc. R1272S012A-E2-FE	18-HSOP 18-LFSOP	Exposed Pad	4.4 mm	0.173 in	Current Limit Enable Power Good Soft Start	Yes	Positive	Transistor Driver	Step-Down	250 kHz	1 MHz	1	Buck	Surface Mount	Yes	34 V	4 V	105 °C	-40 °C	1

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