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CS5112 데이터시트(PDF) 3 Page - Cherry Semiconductor Corporation

부품명 CS5112
상세설명  1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE
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제조업체  CHERRY [Cherry Semiconductor Corporation]
홈페이지  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS5112 데이터시트(HTML) 3 Page - Cherry Semiconductor Corporation

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PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s Watchdog Input (WDI)
VIH
Peak WDI needed to activate
2.0
V
VIL
0.8
V
Hysteresis
Note 1
25
50
mV
Pull-Up Resistor
WDI=0V
20
50
100
Low Threshold
6.25
8.78
11.0
ms
Floating Input Voltage
3.5
V
WDI Pulse Width
5µs
s Switcher Section
Minimum Operating
5.0
V
Input Voltage
Switching Frequency
Refer to Figure 1d.
80
95
110
kHz
Switch Saturation Voltage
ISW = 1.4A
0.7
1.1
1.6
V
Output Current Limit
1.4
2.5
A
Max Switching Frequency
VSW = 7.5V with 50½ load,
120
kHz
Refer to Figure 1d.
VFB1 Regulation Voltage
1.206
1.25
1.294
V
VFB2 Regulation Voltage
1.206
1.25
1.294
V
VFB1, VFB2 Input Current
VFB1 = VFB2 = 5V
1
µA
Oscillator Charge Current
COSC = 0V
35
40
45
µA
Oscillator Discharge Current
COSC = 4V
270
320
370
µA
CDelay Charge Current
CDelay = 0V
35
40
45
µA
Switcher Max Duty Cycle
VSW = 5V with 50½ load,
72
85
95
%
VFB1 = VFB2 = 1V
Current Sense Amp Gain
ISW = 2.3A
7
Error Amp DC Gain
67
dB
Error Amp Transconductance
2700
µA/V
s
Input
VIL
0.8
1.24
V
VIH
1.30
2.0
V
Hysteresis
60
mV
Input Impedance
10
20
40
s Select Input
VIL (Selects VFB1)
4.9 ² VLIN ² 5.1
0.8
1.25
V
VIH (Selects VFB2)
4.9 ² VLIN ² 5.1
1.25
2.0
V
SELECT Pull-Up
SELECT = 0V
10
24
50
Floating Input Voltage
3.5
4.5
V
Note 1: Guaranteed by Design, not 100% tested in production.
ENABLE
RESET
Electrical Characteristics: 5V ² VIN ² 26V and -40¡C ² TJ ² 150¡C, -40¡C ² TA ² 85¡C, COUT = 100µF (ESR²8½),
CDelay = 0.1µF, RBIAS = 64.9k½, COSC = 390 pF, CCOMP = 0.1µF; unless otherwise specified.


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