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CS5159 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. CS5159
Description  CPU 5−Bit Synchronous Buck Controller
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS5159 Datasheet(HTML) 3 Page - ON Semiconductor

 
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CS5159
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (0°C < TA < +70°C; 0°C < TJ < +85°C; 8.0 V < VCC1 < 14 V; 5.0 V < VCC2 < 18 V; DAC
Code: VID4 = VID2 = VID1 = VID0 = 1; VID3 = 0; CVGATE(L) and CVGATE(H) = 1.0 nF; COFF = 330 pF; CSS = 0.1 μF, unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Error Amplifier
VFB Bias Current
VFB = 0 V
0.3
1.0
μA
Open Loop Gain
1.25 V < VCOMP < 4.0 V; Note 2
50
60
dB
Unity Gain Bandwidth
Note 2
500
3000
kHz
COMP SINK Current
VCOMP = 1.5 V; VFB = 3.0 V; VSS > 2.0 V
0.4
2.5
8.0
mA
COMP SOURCE Current
VCOMP = 1.2 V; VFB = 2.7 V; VSS = 5.0 V
30
50
80
μA
COMP CLAMP Current
VCOMP = 0 V; VFB = 2.7 V
0.4
1.0
1.6
mA
COMP High Voltage
VFB = 2.7 V; VSS = 5.0 V
4.0
4.3
5.0
V
COMP Low Voltage
VFB = 3.0 V
160
600
mV
PSRR
8.0 V < VCC1 < 14 V @ 1.0 kHz; Note 2
60
85
dB
VCC1 Monitor
Start Threshold
Output switching
3.75
3.90
4.05
V
Stop Threshold
Output not switching
3.70
3.85
4.00
V
Hysteresis
Start−Stop
50
mV
VGATE(H) and VGATE(L)
Out SOURCE Sat at 100 mA
Measure VCC1 − VGATE(L); VCC2 − VGATE(H)
1.2
2.0
V
Out SINK Sat at 100 mA
Measure VGATE(H) − VPGND; VGATE(L) − VPGND
1.0
1.5
V
Out Rise Time
1.0 V < VGATE(H) < 9.0 V; 1.0 V < VGATE(L) < 9.0 V;
VCC1 = VCC2 = 12 V
30
50
ns
Out Fall Time
9.0 V > VGATE(H) > 1.0 V; 9.0 V > VGATE(L) > 1.0 V;
VCC1 = VCC2 = 12 V
30
50
ns
Delay VGATE(H) to VGATE(L)
VGATE(H) falling to 2.0 V; VCC1 = VCC2 = 8.0 V;
VGATE(L) rising to 2.0 V
25
50
ns
Delay VGATE(L) to VGATE(H)
VGATE(L) falling to 2.0 V; VCC1 = VCC2 = 8.0 V;
VGATE(H) rising to 2.0 V
25
50
ns
VGATE(H), VGATE(L) Resistance
Resistor to LGND, Note 2
20
50
100
VGATE(H), VGATE(L) Schottky
LGND to VGATE(H) @ 10 mA
LGND to VGATE(L) @ 10 mA
600
800
mV
Soft Start (SS)
Charge Time
1.6
3.3
5.0
ms
Pulse Period
25
100
200
ms
Duty Cycle
(Charge Time /Pulse Period) × 100
1.0
3.3
6.0
%
COMP Clamp Voltage
VFB = 0 V; VSS = 0
0.50
0.95
1.10
V
VFFB SS Fault Disable
VGATE(H) = Low; VGATE(L) = Low
0.9
1.0
1.1
V
High Threshold
2.5
3.0
V
PWM Comparator
Transient Response
VFFB = 0 to 5.0 V to VGATE(H) = 9.0 V to 1.0 V;
VCC1 = VCC2 = 12 V
100
125
ns
VFFB Bias Current
VFFB = 0 V
0.3
μA
2. Guaranteed by design, not 100% tested in production.


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