Absolute Maximum Ratings
Input Voltage Range........................................................................................................................................................3V to 60V
Output Switching Voltage.........................................................................................................................................................75V
Voltage Transient (tr=10µs, tf=400ms)......................................................................................................................................60V
ESD (Human Body Model; R=1.5kΩ, C=100pF) ...................................................................................................................2kV
Junction Temperature Range...............................................................................................................................-40°C to +150°C
Storage Temperature Range ................................................................................................................................-65°C to +150°C
Lead Temperature Soldering
Wave Solder (through hole styles only)......................................................................................10 sec. max, 260°C peak
Reflow (SMD styles only) ......................................................................................60 sec. max above 183°C, 230°C peak
Feedback Pin Voltage (1ms transient)...................................................................................................................................±15V
For 3V≤VCC≤60V, -40°C≤TA≤125°C unless otherwise specified.
Electrical Characteristics:
PARAMETER TEST CONDITIONS
MIN
TYP
MAX
UNIT
ꢀ
Reference Voltage
Line Regulation
Feedback Input Current
Minimum Input Voltage
Supply Current
VC=0.8V; VFB=VREF
VC=0.8V; VFB=VREF, 3V≤VIN≤60V
VC=0.8V; VFB=VREF
VC=VFB=VREF
VC=0.6V; 3V≤VIN≤60V
1.214
1.244
1.274
0.03
1100
3.0
V
%/V
nA
V
350
2.6
6.0
9.0
mA
Supply Current Increase
during switch on time
VC=open, 1.0V≤VFB≤1.5V
VC=VFB=VREF; VSW=15V
VC=2V; VFB=open, VSW=15V
25
40
92
0.90
mA/A
kHz
%
Switching Frequency
Maximum Duty Cycle
VC Threshold
33
47
VFB=open; VSW =15V,
0.60
1.25
V
duty cycle=0%
ꢀ Error Amplifier
Transconductance
Source/Sink Current
High Voltage Clamp
Low Voltage Clamp
Gain
VC=0.8V; VFB=VREF, ∆IC=±25µA
VC=1.5V
VFB=1.0V
VFB=1.5V
0.9V≤VC≤1.4V, VFB=VREF
2400
120
4400
200
2.0
0.38
800
7000
400
µmho
µA
V
V
V/V
ꢀ Output Switch
Breakdown Voltage
On Resistance
VC=0.5V; 3V≤VIN≤60V, IOUT=5mA
VC=open, VFB=0.8V, IOUT=1.25A
1.2V≤VC≤1.8V
75
90
0.6
2
V
Ω
A/V
1.0
Control Voltage to Switch
Current Transconductance
Current Limit
Duty Cycle≤50%, TJ≥25°C
Duty Cycle≤50%, TJ<25°C
Duty Cycle=80%
1.25
1.25
1.00
0.50
3.00
3.50
2.50
2.50
A
A
A
A
Duty Cycle=80% (Note 1)
Note 1: 16 lead SO wide package only.
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
