參數(shù)資料
型號(hào)： NCP1205P2
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback
中文描述： SWITCHING CONTROLLER, 125 kHz SWITCHING FREQ-MAX, PDIP14
封裝： PLASTIC, DIP-14
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 163K
代理商： NCP1205P2
NCP1205
http://onsemi.com
2
PIN CONNECTIONS
1
HV
14
V
CC
2
3
FB
4
Ct
13
Drive
12
Isense
11
GND
5
6
7
10
9
8
NC
OVP
NC
NC
NC
NC
PDIP–14
1
HV
8 V
CC
2
Demag
3
FB
4
Ct
7 Drive
6 Isense
5 GND
PDIP–8
Demag
PIN FUNCTION DESCRIPTION
Pin No.
DIP8
DIP14
Pin Name
Function
Description
1
1
HV
Start–up rail
Connected to the rectified HV rail, this pin provides a charging path to
V
CC
bulk capacitor.
2
3
Demag
Zero primary–current
detection
This pin ensures the re–start of the main switcher when operating in
free–run.
3
4
FB
Feedback signal to
control the PWM
This level modulates the peak current level in free–running operation
and modulates the frequency in VFM operation.
4
5
Ct
Timing capacitor
By adding a capacitor from Ct to the ground, the user selects the
minimum/maximum operating frequency.
5
10
Gnd
The IC’s ground
–
NA
6
OVP
Overvoltage input
By applying a 2.8 V typical level on this pin, the IC is permanently
latched–off until V
CC
falls below UVLO
L
.
6
11
Isense
The primary–current
sensing pin
This pin senses the primary current via an external shunt resistor.
7
12
Drv
This pin drives the
external switcher
The IC is able to deliver or absorb 250 mA peak currents while
delivering a clamped driving signal.
8
13
V
CC
Powers the IC
A positive voltage up to 40 V typicalcan be applied upon this pin
before the IC stops.
1. DIP14 has different pinouts. Please see Pin Connections.
2. Pin 2, 7, 8, 9 and 14 are nonconnected on DIP14.
相關(guān)PDF資料
PDF描述
NCP1205 Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback
NCP1207APG PWM Current−Mode Controller for Free Running Quasi−Resonant Operation
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NCP1207ADR2 PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1205P2G 功能描述:電流型 PWM 控制器 Single Ended Quasi Resonant PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
NCP1205PG 功能描述:電流型 PWM 控制器 Single Ended Quasi Resonant PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
NCP1207/D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PWM Current-Mode Controller for Quasi-Resonant Operation
NCP1207A 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
NCP1207A_06 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Current−Mode Controller for Free Running Quasi−Resonant Operation
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