CS3842B/3843B
Electrical Characteristics: continued
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
s
Output Section: continued
Rise Time
Fall Time
Output Leakage
s
Total Standby Current
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
V
FB
=V
Sense
=0V R
T
=10kΩ, C
T
=3.3nF
I
CC
=25mA
CS-3842B
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
T
J
=25˚C, C
L
=1nF (Note 2)
T
J
=25˚C, C
L
=1nF (Note 2)
UVLO Active, V
OUT
=0
50
50
-0.01
150
150
-10.00
ns
ns
µA
0.3
11
34
0.5
17
mA
mA
V
CS-3843B
TYP
MAX UNITS
s
Under-Voltage Lockout Section
Start Threshold
Min. Operating
Voltage
After Turn On
14.5
8.5
16.0
10.0
17.5
11.5
7.8
7.0
8.4
7.6
9.0
8.2
V
V
Notes:
1. Adjust V
CC
above the start threshold before setting at 15V.
2. These parameters, although guaranteed, are not 100% tested
in production.
3. Parameter measured at trip point of latch with V
FB
=0.
4.
Gain defined as:
A=
∆V
COMP
∆V
Sense
; 0
≤
V
Sense
≤
0.8V.
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
8L PDIP/SO
1
2
3
4
5
14L SO Narrow
1
3
5
7
8
9
COMP
V
FB
Sense
OSC
Gnd
Pwr Gnd
V
OUT
V
CC
Pwr
V
CC
V
REF
NC
Error amp output, used to compensate error amplifier
Error amp inverting input
Noninverting input to Current Sense Comparator
Oscillator Timing Network with Capacitor to Ground, resistor
to V
REF
Ground
Output driver Ground
Output drive pin
Output driver positive supply
Positive power supply
Output of 5V internal reference
No Connection
6
10
11
7
8
12
14
2,4,6,13
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
