S-8340A25AFT-T2-X Datasheet, PDF (5/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8340/8341 Series
 Pin Configurations
8-Pin TSSOP
Top view
1
8
2
7
3
6
4
5
Figure 3
Pin No.
1
2
3
4
5
6
7
8
Table 3
Symbol
VSS
CVREF
CSS
ON/OFF
VDD
VOUT
(FB)
EXT
SENSE
Pin Description
GND pin
Reference voltage source pass capacitor connection
pin
Soft-start capacitor connection pin
Shutdown pin
“H” : Normal operation (step-up operating)
“L” : Entire circuit stopped (step-up stopped)
IC power supply pin
Output voltage fixed output type :
Output voltage monitoring pin
[Output voltage external setting type :
Feedback pin]
External transistor connection pin
Current limit detection pin
5