R1212D Datasheet, PDF (16/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1212D
TEST CIRCUITS
VIN
EXT
VREFOUT
A
AMPOUT
DTC
VFB
GND
DELAY
VIN
GND
EXT
VREFOUT
AMPOUT
DTC
VFB
DELAY
Fig.1 Consumption Current Test Circuit
Fig.2 Oscillator Frequency, VFB Voltage,
Duty Cycle, EXT rising time/falling time Test Circuit
VIN
EXT
VREFOUT
AMPOUT
A
DTC
VFB
GND
DELAY
VIN
GND
EXT
VREFOUT
AMPOUT
DTC
VFB
DELAY
A
Fig.3 AMP "L" Output Current/
"H" Output Current Test Circuit
V
VIN
GND
EXT
VREFOUT
AMPOUT
DTC
VFB
DELAY
Fig.4 DELAY Pin Charge Current/
Discharge Current Test Circuit
VIN
EXT
VREFOUT
V
AMPOUT
DTC
VFB
GND
DELAY
Fig.5 EXT "H" ON Resistance Test Circuit
Fig.6 EXT "L" ON Resistance Test Circuit
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