tcv7102af TOSHIBA Semiconductor CORPORATION, tcv7102af Datasheet - Page 2

• Manufacturer Part Number: tcv7102af
• Description: Buck Dc-dc Converter Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Ordering Information
Block Diagram
Pin Description
TCV7102AF (TE12L, Q) Embossed tape (3000 units per reel)
Pin No.
V
SS
EN
FB
Part Number
1
2
3
4
5
6
7
8
Soft Start
Symbol
PGND
SGND
V
V
V
EN
SS
L
IN1
IN2
FB
Constant-current
X
source (8 μA)
Oscillator
voltage
lockout
Under
Ground pin for the output section
Input pin for the output section
This pin is placed in the standby state if V
Input pin for the control section
This pin is placed in the standby state if V
Ground pin for the control section
Feedback pin
This input is fed into an internal error amplifier with a reference voltage of 0.8 V (typ.).
Soft-start pin
When the SS input is left open, the soft-start time is 1ms (typ.). The soft-start time can be adjusted
with an external capacitor. The external capacitor is charged from a 8μA (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 = L and in case of undervoltage lockout or thermal
shutdown.
Enable pin
When EN ≥ 1.5V (@ V
switching operation of the output section. When EN ≤ 0.5 V (@ V
disabled, putting the TCV7102AF in Standby mode.
This pin has an internal pull-down resistor of approx. 500 kΩ.
Switch pin
This pin is connected to high-side P-channel MOSFET and low-side N-channel MOSFET.
Error Amplifer
Ref. Voltage (0.8 V)
+
-
-
Shipping
Compensation
Control logic
Phase compensation
Slope
V
SGND
IN2
IN
= 5V), the internal circuitry is allowed to operate and thus enable the
2
Driver
EN
EN
Current detection
Description
= L. Standby current is 10 μA or less.
= L. Standby current is 10 μA or less.
Short-Circuit
Protection
+
-
IN
V
= 5 V), the internal circuitry is
IN1
PGND
L
X
TCV7102AF
2011-06-23