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参数资料
| 型号： | NCP5211DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 14-SOIC |
| 产品变化通告： | Product Obsolescence 19/Dec/2008 |
| 标准包装： | 2,500 |
| PWM 型： | 电流/电压模式，V²? |
| 输出数： | 1 |
| 频率 - 最大： | 900kHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
NCP5211
MAXIMUM RATINGS
Pin Name
IC Power Input
Power input for the low side driver
Power Supply input for the high side driver
Compensation Capacitor
Voltage Feedback Input
Oscillator Resistor
Fast Feedback Input
High?Side FET Driver
Pin Symbol
V CC
V C
BST
COMP
V FB
R OSC
V FFB
GATE(H)
V MAX
16 V
16 V
20 V
6.0 V
6.0 V
6.0 V
6.0 V
20 V
V MIN
?0.3 V
?0.3 V
?0.3 V
?0.3 V
?0.3 V
?0.3 V
?0.3 V
?0.3 V
I SOURCE
N/A
N/A
N/A
1.0 mA
1.0 mA
1.0 mA
1.0 mA
1.5 A Peak
I SINK
50 mA DC
1.5 A Peak, 200 mA DC
1.5 A Peak, 200 mA DC
1.0 mA
1.0 mA
1.0 mA
1.0 mA
1.5 A Peak, 200 mA DC
?2.0 V for 50 ns
200 mA DC
Low?Side FET Driver
GATE(L)
16 V
?0.3 V
1.5 A Peak,
1.5 A Peak, 200 mA DC
?2.0 V for 50 ns
200 mA DC
Positive Current Sense
Negative Current Sense
Power Ground
IS+
IS?
PGND
6.0 V
6.0 V
0.3 V
?0.3 V
?0.3 V
?0.3 V
1.0 mA
1.0 mA
1.5 A Peak,
1.0 mA
1.0 mA
N/A
200 mA DC
Logic Ground
Sense Ground
LGND
SGND
0V
0.3 V
0V
?0.3 V
100 mA
1.0 mA
N/A
1.0 mA
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PIN SYMBOL
GATE(H)
BST
LGND
V FFB
V FB
COMP
SGND
R OSC
V CC
IS?
IS+
V C
GATE(L)
PGND
FUNCTION
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 m F 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.
http://onsemi.com
3
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