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
PIN NO.
IS+
IS−
CC
FB
10
12
13
14
11
1
2
3
4
5
6
7
8
9
V
60 mV
0.8 V
START
−
PIN SYMBOL
+
−
0.5 V
−
GATE(H)
GATE(L)
COMP
SGND
PGND
LGND
1.0 V
R
V
BST
V
V
−
+
IS−
IS+
V
OSC
FFB
−
+
CC
+
−
FB
+
−
C
Comparator
Comparator
Comparator
Error Amp
100 % DC
UVLO
OC
5.0 mA
Σ
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 mF 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
R
OSC
OSC
5
Set Dominant
S
R
FUNCTION
Reset Dominant
R
S
PWM FF
Q
Q
Q
Q
Fault
GATE(H)
PGND
BST
R
V
GATE(L)
OSC
C