TA1307P Datasheet, PDF (9/12 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)
No.
Characteristics
Output Current
8 (source, sink)
(reference data)
Output Terminal (pin7)
PROTECT Movement Current
9
FB IN Terminal (pin4)
10 _{FB Comparator THRESHOLD}
Hi Voltage
FB IN Terminal (pin4)
11 _{FB Comparator THRESHOLD}
Low Voltage
OCL Terminal (pin5)
PROTECT Movement Current
12
Vcc Terminal (pin1)
OVLO Movement Voltage
13
Standby SW Terminal (pin3)
Movement Voltage
14
FB IN Terminal (pin4)
15 _{Input Current}
SW mode
1
2
3
4
Test Condition
b
b
Measure pin7 (pulse out) current for using
current probe.
a
b
b
b
b
a
b
a
b
b
d
b
c
b
b
c
Increase DC voltage for pin7 (FB IN) through
resistance (100 W), pin7 pulse is made to
output. pin7 DC voltage is upped, and
measure pulse highest level voltage and
a
c ^{increase DC voltage (V6) when pin7 pulse}
duty is began to become short. i7 pt is
calculated by bottom type.
I7pt = (pulse highest level voltage - V6 DC
voltage) /100 W
Increase DC voltage for pin4 (FB IN) (early
a
a ^{value is 2.0 V) pin7 pulse is made to output.}
Pin4 DC voltage is upped, and measure pin4
voltage when pin7 pulse disappears. (Vth4H)
a
a
And Pin4 DC voltage is lowered, and measure
pin4 voltage when pin7 pulse appears.(Vth4L)
Pin4 (FB IN) = GND. Confirm pin7 (pulse out)
pulse is output.
a
a Pin5 (OCL) connect outside power supply.
Pin5 DC voltage is upped, and measure pin5
voltage when pulse disappears.
Pin4 (FB IN) = GND
Confirm pin7 (pulse out) pulse is output.
a
a
Pin1 (Vcc) DC voltage is upped, and measure
Vcc voltage when pulse
disappears.(V1OVLO)
Pin4 (FB IN) = GND
Confirm pin7 (pulse out) pulse is output.
Pin3 (standby SW) connect outside power
a
a _supply.
Pin3 DC voltage is upped (early value is 0 V),
and measure pin3 voltage when pulse
disappears.
Pin4 (FB IN) connect outside power supply
a
a ^{(3.5 V).}
Measure pin4 current.
9
2002-02-12