Electrical Characteristics: continued
TEST CONDITIONS
PARAMETER
MIN
TYP
MAX
UNITS
ꢀ Output Section: continued
Rise Time
TJ=25˚C, CL=1nF (Note 2)
50
150
ns
Fall Time
TJ=25˚C, CL=1nF (Note 2)
50
150
ns
Output Leakage
UVLO Active, VOUT=0
-0.01
-10.00
µA
ꢀ Total Standby Current
Start-Up Current
0.3
11
34
0.5
17
mA
mA
V
Operating Supply Current
VFB=VSense=0V RT=10kΩ, CT=3.3nF
ICC=25mA
VCC Zener Voltage
CS-3842B
MIN TYP MAX
CS-3843B
MIN TYP MAX UNITS
PARAMETER
TEST CONDITIONS
ꢀ Under-Voltage Lockout Section
Start Threshold
14.5 16.0
8.5 10.0
17.5
11.5
7.8
7.0
8.4
7.6
9.0
8.2
V
V
Min. Operating
After Turn On
Voltage
Notes: 1. Adjust VCC above the start threshold before setting at 15V.
3. Parameter measured at trip point of latch with VFB=0.
2. These parameters, although guaranteed, are not 100% tested
in production.
4. Gain defined as:
∆VCOMP
∆VSense
; 0 ≤ VSense ≤ 0.8V.
A =
Package Pin Description
PACKAGE PIN #
8L PDIP/SO 14L SO Narrow
PIN SYMBOL
FUNCTION
1
2
3
4
1
3
5
7
COMP
VFB
Error amp output, used to compensate error amplifier
Error amp inverting input
Sense
OSC
Noninverting input to Current Sense Comparator
Oscillator Timing Network with Capacitor to Ground, resistor
to VREF
5
6
8
9
Gnd
Pwr Gnd
VOUT
Ground
Output driver Ground
Output drive pin
10
11
VCCPwr
VCC
Output driver positive supply
Positive power supply
Output of 5V internal reference
No Connection
7
8
12
14
VREF
2,4,6,13
NC
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
