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參數(shù)資料
| 型號： | NCP1205P2G |
| 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： | LEAD FREE, PLASTIC, DIP-14 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 277K |
| 代理商： | NCP1205P2G |
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
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
Demag
NC
NC
SOIC
16
15
16
PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Function
Description
PDIP
8
PDIP
14
SOIC
16
1
1
1
HV
Startup rail
Connected to the rectified HV rail, this pin provides a
charging path to V
CC
bulk capacitor.
2
3
4
Demag
Zero primary
current
detection
This pin ensures the restart of the main switcher when
operating in free
run.
3
4
5
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
6
Ct
Timing capacitor
By adding a capacitor from Ct to the ground, the user selects
the minimum/maximum operating frequency.
5
10
11
GND
The IC’s ground
NA
6
7
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
12
Isense
The primary
current
sensing pin
This pin senses the primary current via an external shunt
resistor.
7
12
13
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
14
V
CC
Powers the IC
A positive voltage up to 30 V maximum can be applied upon
this pin before the IC stops.
1. PDIP
14 has different pinouts. Please see Pin Connections.
2. Pin 2, 7, 8, 9 and 14 are nonconnected on PDIP
14.
3. Pin 2, 3, 8, 9, 10, 15 and 16 are nonconnected on SOIC
16.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCP1205PG | Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| NCP1205P | Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| NCP1205P2 | Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| NCP1205 | Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| NCP1207APG | PWM Current−Mode Controller for Free Running Quasi−Resonant Operation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 上升時間: 下降時間: 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 |
| NCP1207A_07 | 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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