ncp5217a ON Semiconductor, ncp5217a Datasheet - Page 2

• Manufacturer Part Number: ncp5217a
• Description: Single Synchronous Step-down Controller
• Manufacturer: ON Semiconductor

EN_SKIP
PGOOD
CS−/Vo
COMP
AGND
EN_SKIP
PGOOD
CS+
FB
+5V
1
2
3
4
5
6
7
VREF
DISCH
PGOOD
+
−
+
Control
−
Level
Current Sense
Error Amplifier
Amplifier
CDIFF
ENABLE
FPWM
SKIP
2
3
4
5
6
Figure 2. Typical Application Circuit
CS+
CS−/Vo
COMP
FB
PGOOD
EN_SKIP
AGND
1
7
VREF+10%
VREF−10%
VREF−20%
VREF+15%
QFN14
Figure 1. Block Diagram
http://onsemi.com
DL/TRESET
IDRP/OCP
IDRP/OCP
Detection
PGND
14
BST
8
SWN
VCC
DH
+
−
+
−
+
−
+
−
2
Over Current
OC & TRE Detection
13
12
11
10
Detector
9
PGH
Control
UVP
PGL
OVP
AVP
Thermal Shutdown
Generator and
Control Logic,
NCP5217A
PWM Logic
Protection,
RAMP
Control
UVLO
OSC
VCC
14
13
12
11
10
9
8
VIN
VOUT
PGND
BST
DH
SWN
IDRP/OCP
VCC
DL/TRESET
PGND