R1171S151A Datasheet, PDF (2/36 Pages) RICOH electronics devices division – 2.0A/1.5A LDO REGULATOR

R1172x
BLOCK DIAGRAMS
R1172xxx1A
VDD
VOUT
Vref
Current Limit
Thermal Shutdown
CE
GND
R1172xxx1B
VDD
VOUT
VDD
R1172xxx1D
VOUT
Vref
Vref
Current Limit
Thermal Shutdown
Current Limit
Thermal Shutdown
CE
GND CE
GND
SELECTION GUIDE
The output voltage, auto discharge function*, and the package type for the ICs can be selected at the user’s
request. The selection can be made with designating the part number as shown below;
R1172xxx1x-xx-x ←Part Number
↑↑ ↑ ↑ ↑
ab c d e
Code
a
b
c
d
Contents
Designation of Package Type;
N: SOT-23-5, H: SOT-89-5, D: HSON-6, S: HSOP-6J
Setting Output Voltage (VOUT);
Stepwise setting with a step of 0.1V in the range of 0.8V to 5.0V (HSOP-6J : 0.8V to 3.5V)
is possible.
Exceptions; 1.85V output: R1172x181x5-xx-x, 2.85V output: R1172x281x5-xx-x
Designation of option;
A: active low, without auto discharge function*
B: active high, without auto discharge function*
D: active high, with auto discharge function*
Designation of Taping Type;
T1 (SOT-89-5), TR (SOT-23-5, HSON-6), E2 (HSOP-6J) Refer to Taping Specifications.
e
Designation of composition of pin plating;
-F: Lead free plating
*) When the mode is into standby with CE signal, auto discharge transistor turns on, and it makes the turn-off
speed faster than normal type.
2