ncp5217a ON Semiconductor, ncp5217a Datasheet - Page 3

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

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE:
1. Internally limited by thermal shutdown, 150°C min.
PIN FUNCTION DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
VCC Power Supply Voltage to AGND
High−side Gate Drive Supply: BST to SWN
High−side Gate Drive Voltage: DH to SWN
Low−side Gate Drive Supply: VCC to PGND
Low−side Gate Drive Voltage: DL to PGND
Input / Output Pins to AGND
Switch Node SWN
High−Side Gate Drive/Low−Side Gate Drive Outputs
PGND
Thermal Characteristics
Thermal Resistance Junction−to−Ambient (QFN14 Package)
Operating Junction Temperature Range (Note 1)
Operating Ambient Temperature Range
Storage Temperature Range
Moisture Sensitivity Level
Pin No.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
This device is ESD sensitive. Use standard ESD precautions when handling.
DL/TRESET
IDRP/OCP
EN_SKIP
PGOOD
Symbol
CS−/Vo
COMP
AGND
PGND
SWN
VCC
CS+
BST
DH
FB
This pin serves as two functions. Enable: Logic control for enabling the switcher. SKIP: Power saving
mode (Skip and Force PWM) programmable pin.
Inductor current differential sense non−inverting input.
Inductor current differential sense inverting input.
Output of the error amplifier.
Output voltage feed back.
Power good indicator of the output voltage. High impendence (open drain) if power good (in
regulation). Low impendence if power not good.
Analog ground.
Ground reference and high−current return path for the bottom gate driver.
Gate driver output of bottom N−channel MOSFET. It also has the function for TRESET.
Supply for analog circuit and bottom gate driver.
Over current protection and Droop Voltage programmable pin.
Switch node between the top MOSFET and bottom MOSFET.
Gate driver output of the top N−channel MOSFET.
Top gate driver input supply, a bootstrap capacitor connection between SWN and this pin.
Rating
http://onsemi.com
3
Description
VCC−V
V
V
V
R
BST
DL
DH
qJA_QFN14
Symbol
DH, DL
V
V
VCC
−V
MSL
PGND
V
T
−V
SWN
−V
T
T
stg
IO
A
J
PGND,
PGND,
SWN,
SWN,
−5 V (< 100 ns)
−40 to + 150
− 55 to +150
− 40 to + 85
−0.3, 6.0
−0.3, 6.0
−0.3, 6.0
−0.3, 0.3
−3(DC)
Value
30 V
48
1
°C/W
Unit
°C
°C
°C
V
V
V
V
V
V
−