Absolute Maximum Ratings
Operating Junction Temperature, TJ..................................................................................................................................... 150¡C
Storage Temperature Range, TS...................................................................................................................................-65 to 150¡C
ESD (Human Body Model).........................................................................................................................................................2kV
Lead Temperature Soldering: Reflow (SMD styles only).............................................60 sec. max above 183¡C, 230¡C peak
VMAX
VMIN
ISOURCE
ISINK
Lead Symbol
SYNC
Lead Name
Oscillator Synchronization Input
Oscillator Integrating Capacitor
Oscillator Charge Current Resistor
Voltage Feedback Inputs
Error Amplifier Outputs
PWM Ramp Inputs
5.5V
5.5V
5.5V
5.5V
7.5V
5.5V
20V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V
5 mA
1mA
1mA
N/A
2mA
1mA
5 mA
1mA
1mA
N/A
50mA
1mA
CT
RT
VFB1, VFB2
COMP1, COMP2
VFFB1, VFFB2
GATE1, GATE2
FET Gate Drive Outputs
-0.3V DC,
-2.0V for
t < 50ns
200mA DC,
1A peak
(t < 100µs)
200mA DC,
1A peak
(t < 100µs)
LGnd
PGnd
Reference Ground and IC Substrate
Power Ground
0V
0V
0V
0V
25 mA
N/A
N/A
1A Peak,
200mA DC
ENABLE
VREF
Channel 2 Enable
5.5V
5.5V
-0.3V
-0.3V
1mA
N/A
5mA
Reference Voltage Output
150mA
(short circuit)
VIN
Power Supply Input
20V
-0.3V
N/A
200mA DC,
1A peak
(t < 100µs)
Electrical Characteristics: 0¡C < TA < 70¡C; 0¡C < TJ < 125¡C; 9.4V < VIN < 20V; CT = 330 pF; RT = 27k½;
unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
■ Reference Section
VREF Output Voltage
Room Temperature,
4.9
5.0
5.1
V
IVREF = 1mA, VIN = 12V
Line Regulation
Load Regulation
1
20
26
mV
mV
V
1 mA < IVREF < 10 mA
15
VREF Variation over Line, Load
and Temperature
4.85
30
5.15
Output Short Circuit Current
100
210
150
245
mA
■ Oscillator Section
Oscillator Frequency Variation
over Line and Temperature
175
kHz
Maximum Duty Cycle
Sync Threshold
80
90
98
%
V
0.8
1.6
2.4
Sync Bias Current
VSYNC = 2.4V
VSYNC = 5.0V
170
430
250
750
µA
Sync Propagation Delay
230
ns
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
