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CS51313 Datasheet(PDF) 4 Page - Cherry Semiconductor Corporation

Part # CS51313
Description  Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators
PDF  20 Pages
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Manufacturer  CHERRY [Cherry Semiconductor Corporation]
Direct Link  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS51313 Datasheet(HTML) 4 Page - Cherry Semiconductor Corporation

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PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
4
Electrical Characteristics: 0˚C < TA < 70˚C; 0˚C < TJ < 125˚C; 9V < VCC < 14V;
2.0V DAC Code (VID4 = VID3 =VID2 = VID1 = 0, VID0 = 1), CGATE(H) = CGATE(L) = 3.3nF, COFF = 390pF; Unless otherwise stated.
Line Regulation
9V ≤ VCC ≤ 14V
0.01
%/V
Input Threshold
VID4, VID3, VID2, VID1, VID0
1.00
1.25
2.40
V
Input Pull-up Resistance
VID4, VID3, VID2, VID1, VID0
25
50
100
kΩ
Pull-up Voltage
5.48
5.65
5.82
V
s
Bandgap Reference Voltage
VREF
IVREF = 10µA sourcing,VCC = 12V
1.211
1.230
1.248
V
s
GATE(H) and GATE(L)
High Voltage at 100mA
Measure VCC –GATE(L)/(H)
1.2
2.1
V
Low Voltage at 100mA
Measure GATE(L)/H
1.0
1.5
V
Rise Time
1.6V < GATE(H)/(L) < (VCC – 2.5V)
40
80
ns
Fall Time
(VCC – 2.5V) > GATE(L)/(H) > 1.6V
40
80
ns
GATE(H) to GATE(L) Delay
GATE(H)<2V, GATE(L)>2V
30
65
110
ns
VCC = 12V
GATE(L) to GATE(H) Delay
GATE(L)<2V, GATE(H)>2V
30
65
110
ns
VCC = 12V
GATE pull-down
Resistance to Gnd (Note 3)
20
50
115
kΩ
s
Overcurrent Protection
OVC Comparator Offset Voltage
0V ≤ VOUT ≤ 3.5V
77
86
101
mV
Discharge Threshold Voltage
0.2
0.25
0.3
V
VOUT Bias Current
0.2V ≤ VOUT ≤ 3.5V
-7.0
0.1
7.0
µA
OVC Latch Discharge Current
VCOMP = 1V
100
800
2500
µA
s
PWM Comparator
PWM Comparator Offset Voltage
0V ≤ VFB ≤ 3.5V
0.99
1.10
1.23
V
Transient Response
VFB = 0 to 3.5V
200
300
ns
s
COFF
Off-Time
1.0
1.6
2.3
µs
Charge Current
VCOFF = 1.5V
550
µA
Discharge Current
VCOFF = 1.5V
25
mA
s
Power-Good Output
PWRGD Sink Current
VFB = 1.7V, VPWRGD = 1V
0.5
4
15
mA
PWRGD Upper Threshold
% of nominal DAC code
5
8.5
12
%
PWRGD Lower Threshold
% of nominal DAC code
-12
-8.5
-5
%
PWRGD Output Low Voltage
VFB = 1.7V, IPWRGD = 500uA
0.2
0.3
V
s
Overvoltage Protection (OVP) Output
OVP Source Current
OVP = 1V
1
10
25
mA
OVP Threshold
% of nominal DAC code
5
8.5
12
%
OVP Pull-up Voltage
IOVP = 1mA, VCC - VOVP
1.1
1.5
V



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