參數資料
型號: TCV7101F(TE12L,Q)
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, 720 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 5 X 5 MM, 1.27 MM PITCH, PLASTIC, HSON-8
文件頁數: 10/17頁
文件大?。?/td> 461K
代理商: TCV7101F(TE12L,Q)
TCV7101F
2010-03-18
2
Ordering Information
Part Number
Shipping
TCV7101F (TE12L, Q)
Embossed tape (3000 units per reel)
Block Diagram
Pin Description
Pin No.
Symbol
Description
1
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.
2
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.
3
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.
4
GND
Ground pin
5
VFB
Feedback pin
This input is fed into an internal error amplifier with a reference voltage of 0.8 V (typ.).
6
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 TCV7101F in Standby mode.
This pin has an internal pull-down resistor of approx. 500 k
Ω.
7
LSG
Gate drive pin for the low-side switch
8
LX
Switch pin
This pin is connected to high-side P-channel MOSFET.
Control logic
Current detection
VIN1
LX
LSG
+
-
Slope
compensation
Under
voltage
lockout
VIN2
Constant-current
source (8
μA)
GND
+
-
Phase compensation
Soft start
Error amplifier
Ref. voltage (0.8 V)
EN
VFB
SS
-
Short-Circuit
protection
Driver
Oscillator
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