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CS5212GDR14G Datasheet(PDF) 3 Page - ON Semiconductor

Part # CS5212GDR14G
Description  Low Voltage Synchronous Buck Controller
Download  13 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS5212GDR14G Datasheet(HTML) 3 Page - ON Semiconductor

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CS5212
http://onsemi.com
3
MAXIMUM RATINGS
Pin Name
Pin Symbol
VMAX
VMIN
ISOURCE
ISINK
IC Power Input
VCC
6.0 V
−0.3 V
N/A
50 mA DC
Power input for the low side driver
VC
16 V
−0.3 V
N/A
1.5 A Peak,
200 mA DC
Power Supply input for the high side driver
BST
20 V
−0.3 V
N/A
1.5 A Peak,
200 mA DC
Compensation Capacitor
COMP
6.0 V
−0.3 V
1.0 mA
1.0 mA
Voltage Feedback Input
VFB
6.0 V
−0.3 V
1.0 mA
1.0 mA
Oscillator Resistor
ROSC
6.0 V
−0.3 V
1.0 mA
1.0 mA
Fast Feedback Input
VFFB
6.0 V
−0.3 V
1.0 mA
1.0 mA
High−Side FET Driver
GATE(H)
20 V
−0.3 V
−2.0 V for 50 ns
1.5 A Peak,
200 mA DC
1.5 A Peak,
200 mA DC
Low−Side FET Driver
GATE(L)
16 V
−0.3 V
−2.0 V for 50 ns
1.5 A Peak,
200 mA DC
1.5 A Peak,
200 mA DC
Positive Current Sense
IS+
6.0 V
−0.3 V
1.0 mA
1.0 mA
Negative Current Sense
IS−
6.0 V
−0.3 V
1.0 mA
1.0 mA
Power Ground
PGND
0.3 V
−0.3 V
1.5 A Peak,
200 mA DC
N/A
Logic Ground
LGND
0 V
0 V
100 mA
N/A
Sense Ground
SGND
0.3 V
−0.3 V
1.0 mA
1.0 mA
ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C (CS5212E); 0°C < TA < 70°C (CS5212G); −40°C < TJ < 125°C; 3.1 V < VCC <
3.5 V; 3.1 V < VC < 7.0 V; 4.5 V < BST < 20 V; CGATE(H) = CGATE(L) = 3.3 nF; ROSC = 51 k; CCOMP = 0.1 mF, unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Error Amplifier
VFB Bias Current
VFB = 0 V
0.1
1.0
mA
COMP Source Current
VFB = 0.8 V
15
30
60
mA
COMP SINK Current
VFB = 1.2 V
15
30
60
mA
Open Loop Gain
98
dB
Unity Gain Bandwidth
C = 0.1 mF
50
kHz
PSRR @ 1.0 kHz
70
dB
Output Transconductance
32
mmho
Output Impedance
2.5
MW
Reference Voltage
−0.1 V < SGND < 0.1 V,
COMP = VFB, Measure VFB to SGND
0.977
0.992
1.007
V
COMP Max Voltage
VFB = 0.8 V
2.5
3.0
V
COMP Min Voltage
VFB = 1.2 V
0.1
0.2
V
GATE(H) and GATE(L)
High Voltage (AC)
GATE(L)
GATE(H)
0.5 nF < CGATE(H) = CGATE(L) < 10 nF (Note 2)
VC − 0.5
BST − 0.5
V
V
Low Voltage (AC)
GATE(L) or GATE(H)
0.5 nF < CGATE(H); CGATE(L) < 10 nF (Note 2)
0.5
V
Rise Time
VC = BST = 7.0 V, Measure:
0.7 V < GATE(L) < 6.3 V,
0.7 V < GATE(H) < 6.3 V
40
80
ns
Fall Time
VC = BST = 7.0 V, Measure:
0.7 V < GATE(L) < 6.3 V,
0.7 V < GATE(H) < 6.3 V
40
80
ns
2. GBD.


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