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參數(shù)資料
| 型號(hào)： | NCP5211BDR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low Voltage Synchronous Buck Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | LEAD FREE, SOIC-14 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 132K |
| 代理商： | NCP5211BDR2G |
NCP5211
http://onsemi.com
3
MAXIMUM RATINGS
Pin Name
Pin Symbol
V
MAX
V
MIN
I
SOURCE
I
SINK
IC Power Input
V
CC
16 V
0.3 V
N/A
50 mA DC
Power input for the low side driver
V
C
16 V
0.3 V
N/A
1.5 A Peak, 200 mA DC
Power Supply input for the high side driver
BST
20 V
0.3 V
N/A
1.5 A Peak, 200 mA DC
Compensation Capacitor
COMP
6.0 V
0.3 V
1.0 mA
1.0 mA
Voltage Feedback Input
V
FB
6.0 V
0.3 V
1.0 mA
1.0 mA
Oscillator Resistor
R
OSC
6.0 V
0.3 V
1.0 mA
1.0 mA
Fast Feedback Input
V
FFB
6.0 V
0.3 V
1.0 mA
1.0 mA
HighSide FET Driver
GATE(H)
20 V
0.3 V
2.0 V for 50 ns
1.5 A Peak
200 mA DC
1.5 A Peak, 200 mA DC
LowSide FET Driver
GATE(L)
16 V
0.3 V
2.0 V for 50 ns
1.5 A Peak,
200 mA DC
1.5 A Peak, 200 mA DC
Positive Current Sense
IS+
6.0 V
0.3 V
1.0 mA
1.0 mA
Negative Current Sense
IS
6.0 V
0.3 V
1.0 mA
1.0 mA
Power Ground
PGND
0.3 V
0.3 V
1.5 A Peak,
200 mA DC
N/A
Logic Ground
LGND
0 V
0 V
100 mA
N/A
Sense Ground
SGND
0.3 V
0.3 V
1.0 mA
1.0 mA
PIN DESCRIPTION
PIN NO.
PIN SYMBOL
FUNCTION
1
GATE(H)
High Side Switch FET driver pin. Capable of delivering peak currents of 1.0 A.
2
BST
Power supply input for the high side driver.
3
LGND
Reference ground. All control circuits are referenced to this pin. IC substrate connection.
4
V
FFB
Input for the PWM comparator.
5
V
FB
Error amplifier input.
6
COMP
Error Amp output. PWM Comparator reference input. A capacitor to LGND provides error amp
compensation.
7
SGND
Internal reference is connected to this ground. Connect directly at the load for ground remote
sensing.
8
R
OSC
A resistor from this pin to SGND sets switching frequency.
9
V
CC
Input Power Supply Pin. It supplies power to control circuitry. A 0.1 F Decoupling cap is
recommended.
10
IS
Negative input for overcurrent comparator.
11
IS+
Positive input for overcurrent comparator.
12
V
C
Power supply input for the low side driver.
13
GATE(L)
Low Side Synchronous FET driver pin. Capable of delivering peak currents of 1.0 A.
14
PGND
High Current ground for the GATE(H) and GATE(L) pins.
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