CS5212GD14 ONSEMI [ON Semiconductor], CS5212GD14 Datasheet - Page 5

• Manufacturer Part Number: CS5212GD14
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ONSEMI [ON Semiconductor]

PACKAGE PIN DESCRIPTION
COMP
LGND
SGND
V
V
FFB
V
IS+
IS–
CC
FB
PIN NO.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
V
60 mV
0.8 V
START
0.5 V
1.0 V
PIN SYMBOL
GATE(H)
GATE(L)
COMP
SGND
PGND
LGND
R
V
Comparator
Comparator
BST
V
Comparator
V
IS+
IS–
Error Amp
100 % DC
V
OSC
FFB
CC
FB
C
UVLO
OC
5.0 A
High Side Switch FET driver pin. Capable of delivering peak currents of 1.0 A.
Power supply input for the high side driver.
Reference ground. All control circuits are referenced to this pin. IC substrate connection.
Input for the PWM comparator.
Error amplifier input.
Error Amp output. PWM Comparator reference input. A capacitor to LGND provides error amp
compensation.
Internal reference is connected to this ground. Connect directly at the load for ground remote
sensing.
A resistor from this pin to SGND sets switching frequency.
Input Power Supply Pin. It supplies power to control circuitry. A 0.1 F Decoupling cap is
recommended.
Negative input for overcurrent comparator.
Positive input for overcurrent comparator.
Power supply input for the low side driver.
Low Side Synchronous FET driver pin. Capable of delivering peak currents of 1.0 A.
High Current ground for the GATE(H) and GATE(L) pins.
0.25 V
ART Ramp
COMP Discharge COMP
Fault
UVLO
PWM Comparator
Figure 2. Block Diagram
http://onsemi.com
CS5212
R
OSC
OSC
5
Set Dominant
S
R
Reset Dominant
R
S
PWM FF
FUNCTION
Q
Q
Q
Q
Fault
GATE(H)
PGND
BST
R
V
GATE(L)
OSC
C