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参数资料
| 型号： | MCP1631VHV-500E/SS |
| 厂商： | Microchip Technology |
| 文件页数： | 15/34页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM VM 20-SSOP |
| 标准包装： | 67 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2MHz |
| 占空比： | 10% |
| 电源电压： | 3.5 V ~ 16 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： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 668 (CN2011-ZH PDF) |
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MCP1631/HV/MCP1631V/VHV
3.0
PIN DESCRIPTIONS
TABLE 3-1:
PIN FUNCTION TABLE
TSSOP/SSOP
MCP1631/MCP1631V
4x4
QFN
MCP1631HV/
MCP1631VHV
TSSOP/SSOP
Sym
Description
1
2
3
4
5
6
7
8,9,10
—
11
15
16
17
18
19
20
1
2,4,12
—
3
1
2
3
4
5
6
7
8,9
10
—
P GND
SHDN
OS C IN
OSC DIS
OV IN
V REF
A GND
NC
V IN
A VDD_IN
Power ground return
Shutdown input
External oscillator input
Oscillator disable input
Overvoltage comparator input
External voltage reference input
Quiet or analog ground
No connection
High voltage input
Analog bias voltage input
—
—
11
A VDD_OUT Regulated V DD output
12
13
14
15
16
17
5
6
7
8
9
10
12
13
14
15
16
17
VS IN
IS IN
VS OUT
IS OUT
COMP
FB
Voltage sense amplifier (A3) input
Current sense input
Voltage sense amplifier output
Current sense amplifier output
Error amplifier (A1) output
Error amplifier inverting input (A1)
18
11
18
CS/V RAMP CS - current sense input; V RAMP voltage ramp input
19
20
—
13
14
21
19
20
—
P VDD
V EXT
EP
Power V DD input
External driver output
Exposed Thermal Pad (EP); must be connected to A GND
3.1
Power Ground (P GND )
3.4
Oscillator Disable (OSC DIS )
Connect power ground return pin to power ground
plane, high peak current flows through the P GND during
the turn on and turn off the external MOSFET devices.
3.2 Shutdown Input (SHDN)
Shutdown input logic low disables device and lowers I Q
to minimum value, amplifier A3 (VS) remains functional
for battery voltage sense applications.
3.3 Oscillator Input (OSC IN )
External Oscillator Input, used to set power train
switching frequency and maximum duty cycle, V EXT
enabled while low and disabled while high.
? 2008 Microchip Technology Inc.
Oscillator disable input, used to asycnronously
terminate the V EXT duty cycle. Commonly used to
modulate current for LED driver applications.For
minimum shutdown I Q , connect OSC DIS to SHDN.
3.5 Overvoltage Input (OV IN )
Overvoltage Comparator input, connect to voltage
divider, internal comparator terminates V EXT output in
50 ns to limit output voltage to predetermined value.
3.6 External Reference Voltage Input
(V REF )
External Voltage Reference input, connect fixed or
variable external reference to V REF , with A1 configured
as an error amplifier, the power supply output variable
(voltage or current) will follow this input.
DS22063B-page 15
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