TA1307P Datasheet, PDF (8/12 Pages) Toshiba Semiconductor – Integrated Circuit For Standby Power-Supply Control

TA1307P
AC Characteristics Measurement (there is no designation V_CC = 9 V, Ta = 25°C)
(refer: Figure 5 AC characteristic measurement circuit)
No.
Characteristics
UVLO movement voltage
(VUL/VUH)
1
Start Up Current
2
Triangle Wave Oscillate Frequency
3
Output Pulse Rise Time
4 _{(reference data)}
Output Pulse Fall Time
5 _{(reference data)}
6 ^{Output Pulse Max. Voltage}
7 ^{Output Pulse Min. Voltage}
SW mode
1
2
3
4
Test Condition
Pin4 (FB IN) = GND
Confirm pin7 (pulse out) pulse is output.
Vcc voltage is lowered, and measure V_cc
b
b
a
a ^{voltage when pin7 output pulse}
disappears.(VUL)
And Vcc voltage is upped, and measure V_cc
voltage when pin7 output pulse
appears.(VUH)
Pin4 (FB IN) = GND
Input voltage Vcc < 5.0 V
b
b
a
a (= pin7 pulse is not outputted)
And Vcc voltage is upped (V_cc = 9V)
Measure source current through V_cc (I strt).
Pin4 (FB IN) = GND
b
b
a
a ^{Confirm pin7 (pulse out) pulse is output.}
Measure pulse period, look for frequency.
(F_osc)
b
b
Above condition, measure pulse rise time
a
a
:pulse amplitude 10% to 90% (TRPF)
b
b
Above condition, measure pulse fall time
a
a
:pulse amplitude 10% to 90% (TSPF)
b
b
a
a
Above condition, measure pulse Max. voltage.
(VOPMX)
b
b
a
a
Above condition, measure pulse Min. voltage.
(VOPMN)
8
2002-02-12