NCP5222 ON Semiconductor, NCP5222 Datasheet - Page 5

• Manufacturer Part Number: NCP5222
• Description: High Performance Dual-channel / Two-phase Synchronous Buck Controller For Notebook Power System
• Manufacturer: ON Semiconductor

PIN DESCRIPTION
No.
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
1
2
3
4
5
6
7
8
9
PGOOD2
PGOOD1
Symbol
COMP1
COMP2
PGND2
PGND1
DRVS /
SWN2
SWN1
AGND
CS2−/
VCCP
CS1−/
CS2+
EN2 /
Skip2
BST2
BST1
EN1 /
Skip1
CS1+
ICS1
ICS2
VCC
DH2
2CH
DH1
FB1
FB2
DL2
DL1
VIN
Vo2
Vo1
Current−Sense Output 1. Output of the current−sense amplifier of channel 1.
Feedback 1. Output voltage feedback of channel 1.
COMP1. Output of the error amplifier of channel 1.
Vin. Input supply voltage monitor input.
COMP2. Output of the error amplifier of channel 2.
Feedback 2. Output voltage feedback of channel 2.
Current−Sense Output 2. Output of the current−sense amplifier of channel 2.
Current Sense 2−. Inductor current differential sense inverting input of Channel 2. Output Voltage 2. Connection
to output of Channel 2.
Current Sense 2+. Inductor current differential sense non−inverting input of Channel 2.
Enable 2. Enable logic input of Channel 2. Skip 2. Power−saving operation (FPWM and Skip) programming pin
of Channel 2.
BOOTSTRAP Connection 2.Channel 2 high−side gate driver input supply, a bootstrap capacitor connection
between SWN2 and this pin.
High−Side Gate Drive 2. Gate driver output of the high−side N−Channel MOSFET for channel 2.
Switch Node 2. Switch node between the high−side MOSFET and low−side MOSFET of Channel 2.
Low−Side Gate Drive 2. Gate driver output of the low−side N−Channel MOSFET for channel 2.
Power Ground 2. Ground reference and high−current return path for the low−side gate driver of channel 2.
Power GOOD 2. Power good indicator of the output voltage of channel 2. (Open drained)
VCC. This pin powers the control section of IC.
Gate Driver for Switch. Gate driver output for the external switch in dual−phase configuration. Dual−Channel.
Dual−channel configuration programming pin.
VCC Power. This pin powers internal gate drivers.
Power GOOD 1. Power good indicator of the output voltage of channel 1. (Open drained)
Power Ground 1. Ground reference and high−current return path for the low−side gate driver of channel 1.
Low−Side Gate Drive 1. Gate driver output of the low−side N−Channel MOSFET for channel 1.
Switch Node 1. Switch node between the high−side MOSFET and low−side MOSFET of Channel 1.
High−Side Gate Drive 1. Gate driver output of the high−side N−Channel MOSFET for channel 1.
BOOTSTRAP Connection 1. Channel 1 high−side gate driver input supply, a bootstrap capacitor connection
between SWN1 and this pin.
Enable 1. Enable logic input of Channel 1. Skip 1. Power−saving operation (FPWM and Skip) programming pin
of Channel 1.
Current Sense 1+. Inductor current differential sense non−inverting input of Channel 1.
Current Sense 1−. Inductor current differential sense inverting input of Channel 1. Output Voltage 1. Connection
to output of Channel 1.
Analog Ground. Low noise ground for control section of IC.
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5
Descriptions