CS5111
Electrical Characteristics:
5V
≤
V
IN
≤
26V and -40°C
≤
T
J
≤
150°C, C
OUT
=100µF(ESR
≤
8Ω), C
Delay
= 0.1µF, R
BIAS
= 64.9k,
C
OSC
= 390 pF, C
COMP
= 0.1µF unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Watchdog Input (WDI)
VIH
VIL
Hysteresis
Pull-Up Resistor
Low Threshold
Floating Input Voltage
WDI Pulse Width
Peak WDI needed to activate RESET
0.8
Note 1
WDI=0V
25
20
6.25
3.5
50
50
8.78
2.0
V
V
mV
100
11.0
5
kΩ
ms
V
µs
s
Switcher Section
Minimum Operating
Input Voltage
Switching Frequency
Switch Saturation Voltage
Output Current Limit
Max Switching Frequency
V
FB1
Regulation Voltage
V
FB2
Regulation Voltage
V
FB1
, V
FB2
Input Current
Oscillator Charge Current
Oscillator Discharge Current
C
Delay
Charge Current
Switcher Max Duty Cycle
Current Sense Amp Gain
Error Amp DC Gain
Error Amp Transconductance
V
FB1
= V
FB2
= 5V
C
OSC
= 0V
C
OSC
= 4V
C
Delay
= 0V
V
SW
= 5V with 50Ω load,
V
FB1
= V
FB2
= 1V
I
SW
= 2.3A
35
270
35
72
40
320
40
85
7
67
2700
V
SW
= 7.5V with 50Ω load,
Refer to Figure 1d.
Refer to Figure 1d.
I
SW
= 1.4A
80
0.7
1.4
120
1.206
1.206
1.25
1.25
95
1.1
5.0
110
1.6
2.5
V
kHz
V
A
kHz
1.294
1.294
1
45
370
45
95
V
V
µA
µA
µA
µA
%
dB
µA/V
s
ENABLE Input
VIL
VIH
Hysteresis
Input Impedance
0.8
1.24
1.30
60
2.0
40
V
V
mV
kΩ
10
20
s
Select Input
VIL (Selects V
FB1
)
VIH (Selects V
FB2
)
SELECT Pull-Up
Floating Input Voltage
4.9
≤
V
LIN
≤
5.1
4.9
≤
V
LIN
≤
5.1
SELECT = 0V
0.8
10
3.5
1.25
1.25
24
4.5
2.0
50
V
V
kΩ
V
Note 1: Guaranteed by Design, not 100% tested in production.
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
