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參數(shù)資料
| 型號(hào)： | TCV7100F(TE12L,Q) |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4.2 A SWITCHING REGULATOR, 960 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 5 X 5 MM, 1.27 MM PITCH, PLASTIC, HSON-8 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大小： | 394K |
| 代理商： | TCV7100F(TE12L,Q) |
TCV7100F
2008-06-10
2
Ordering Information
Part Number
Shipping
TCV7100F (TE12L, Q)
Embossed tape (3000 units per reel)
Block Diagram
Pin Description
Pin No.
Symbol
Description
1
PGND
Ground for the output section
2
VIN1
Input pin for the output section
This pin is placed in the standby state if VEN = low. Standby current is 10 μA or less.
3
VIN2
Input pin for the control section
This pin is placed in the standby state if VEN = low. Standby current is 10 μA or less.
4
SGND
Ground for the control section
5
VFB
Feedback pin
This input is fed into an internal error amplifier with a reference voltage of 0.8 V (typ.).
6
SS
Soft-start pin
When the SS input is left open, the soft-start time is 1 ms (typ.). The soft-start time can be adjusted
with an external capacitor. The external capacitor is charged from a 8-
μA (typ.) constant-current
source, and the reference voltage of the error amplifier is regulated between 0 V and 0.8 V. The
external capacitor is discharged when EN
= low and in case of undervoltage lockout or thermal
shutdown.
7
EN
Enable pin
When EN
≥ 1.5 V (@ VIN = 5 V), the internal circuitry is allowed to operate and thus enable the
switching operation of the output section. When EN
≤ 0.5 V (@ VIN = 5 V), the internal circuitry is
disabled, putting the TCV7100F in Standby mode.
This pin has an internal pull-down resistor of approx. 500 k
Ω.
8
LX
Switch pin
This pin is connected to high-side P-channel MOSFET and low-side N-channel MOSFET.
VIN2
VFB
Constant-current
source (8
μA)
Soft Start
Ref. Voltage (0.8 V)
SS
EN
Under
voltage
lockout
Control logic
Slope
Compensation
Oscillator
Error amplifier
Driver
Phase compensation
Short-Circuit
Protection
LX
PGND
VIN1
Current detection
SGND
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