R1211X Datasheet, PDF (17/33 Pages) RICOH electronics devices division – Step-up DC/DC Controller

*DELAY Pin Detector Threshold Voltage Test
3.3V
V IN EXT
CE
V FB
OSCILLOSCOPE
GND _DELAY
*Standby Current Test
6V
A
VIN
CE
V _FB
GNDDELAY
*UVLO Detector Threshold/Hysteresis Range Test
VIN ^EXT
CE
V_FB
OSCILLOSCOPE
GNDDELAY
* CE “L” Input Current/”H” Input Current Test
VIN
CE
A
V FB
GND DELAY
0V/6V
*CE “L” Input Voltage/”H” Input Voltage Test
VIN EXT
CE
V FB
GND ^DELAY
OSCILLOSCOPE
*Soft-start Time Test
Coil
C5
C3
V_{IN EXT}
CE
V FB
GND DELAY
NMOS
C1
0V/3.3V
R3
V_OUT
C2
OSCILLOSCOPE
Rout
R1
R2
Rev. 1.10
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