THV3012 Datasheet, PDF (5/12 Pages) THine Electronics, Inc. – 1ch DC/DC converter

THV3012_Rev.1.00_E
Pin Description
Pin
Symbol
Function
1
VIN
Input voltage detection pin. Connect to the input power supply.
Power standby Indication. Applying low level voltage to this pin, IC
2
PSI
goes into the light load mode. Applying high level, IC operates in the
synchronous mode.
3
BOOT
Bootstrap pin. Bias input for high side power MOSFET driver.
4
LL
Switching output. Connect to the inductor node.
5
FSET
Oscillation frequency setting pin. Connect to VCC for 360kHz, leave it
open for 500kHz.
6
HG
High side gate drive output.
7
OFFDELAY Shut-off delay time setting. Connect a capacitor to the GND.
8
LG
Low gate drive output.
9
GND
Ground.
10
PGOOD
Power good output. PGOOD outputs High level, when CTL pin is High
level and output voltage is 82.4% or more of set voltage.
11
CSN
Current sense negative input.
Current sense positive input. When 60mV(typ) or more of voltage dif-
ference is detected between CSP pin and CSN pin, the voltage on LL
12
CSP
pin falls down to the low level. When the voltage on CTL pin is low
level, the transistor turns to the On state and pull-down the output volt-
age.
13
FB
Output voltage feedback.
14
SS
Soft start time setting pin. Connect a capacitor to the GND.
15
CTL
Enable pin. Active at high level. CTL pin is able to be set at the voltage
higher than VIN.
16
VCC
Power supply for control block. Connect to power supply of 4.5 ~ 5.5V.
Connect a capacitor to the GND.
Copyright©2009 THine Electronics, Inc.
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THine Electronics, Inc.