Absolute Maximum Ratings
VMIN
Pin Name
VMAX
ISOURCE
ISINK
VIN
BOOST
VSW
40V
40V
40V
7V
−0.3V
−0.3V
N/ A
N/ A
4A
4A
100mA
10mA
1mA
−0.6V/ −1V, t < 50ns
−0.3V
VC
1mA
1mA
1mA
1mA
1mA
50mA
SHDNB
SYNC
BIAS
VFB
7V
−0.3V
1mA
7V
−0.3V
1mA
7V
−0.3V
50mA
1mA
7V
−0.3V
Gnd
7V
−0.3V
1mA
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40˚C to +150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature Soldering: Reflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 second max above 183°C, 230°C peak
ESD Damage Threshold (Human Body Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV
Electrical Characteristics: –40°C < TJ < 125°C (CS51411E/2E/3E/4E); –40°C < TA < 85°C (CS51411E/2E/3E/4E);
0° C < TA < 70°C (CS51411G/2G/3G/4G), 4.5V < VIN < 40V; Unless otherwise specified.
PARAMETER
ꢀ Oscillator
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Frequency
CS51411/ CS51412
224
446
260
520
0.05
90
296
594
0.15
95
kHz
kHz
%/ V
%
Operating Frequency
CS51413/ CS51414
Frequency Line Regulation
Maximum Duty Cycle
85
VFB Frequency Foldback Threshold
0.29
0.32
0.36
V
ꢀ PWM Comparator
Slope Compensation Voltage
CS51411/ CS51412 Fix VFB, ∆VC/ ∆TON
CS51413/ CS51414
8
25
17
50
26
75
mV/ µs
mV/ µs
Minimum Output Pulse Width
CS51411/ CS51412, VFB to VSW
CS51413/ CS51414, VFB to VSW
150
300
230
ns
ns
ꢀ Power Switch
Current Limit
VFB > 0.36V
VFB < 0.29V
1.6
0.9
0.4
2.3
1.5
0.7
120
3.0
2.1
1.0
160
A
A
Foldback Current
Saturation Voltage
Current Limit Delay
I
OUT = 1.5A, VBOOST = VIN + 2.5V
V
Note 1
ns
ꢀ Error Amplifier
Internal Reference Voltage
Reference PSRR
1.244
1.270
40
1.296
V
dB
Note 1
FB Input Bias Current
Output Source Current
Output Sink Current
Output High Voltage
Output Low Voltage
Unity Gain Bandwidth
Open Loop Amplifier Gain
Amplifier Transconductance
0.02
25
0.1
35
µA
VC = 1.270V, VFB = 1V
VC = 1.270V, VFB = 2V
VFB = 1V
15
15
µA
25
35
µA
1.39
5
1.46
20
1.53
60
V
VFB = 2V
mV
kHz
dB
Note 1
500
70
Note 1
Note 1
6.4
mA/ V
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
