S-8351A20MC-J2FT2X Datasheet, PDF (9/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
Rev.3.0_01
S-8351/8352 Series
Table 10 S-8351 Series D Type
(Without shutdown function, VDD / VOUT separate type)
Pin No.
Symbol
Pin Description
1
VOUT
Output voltage pin
2
VDD
IC power supply pin
3
NC^*1
No connection
4
VSS
GND pin
5
CONT
External inductor connection pin (Open-drain output)
*1. The NC pin indicates electrically open.
Table 11 S-8352 Series D Type
(Without shutdown function, VDD / VOUT separate type)
Pin No.
Symbol
Pin Description
1
VOUT
Output voltage pin
2
VDD
IC power supply pin
3
NC^*1
No connection
4
VSS
GND pin
5
EXT
External transistor connection pin (CMOS output)
*1. The NC pin indicates electrically open.
SOT-89-3
Top view
123
Figure 9
Table 12 S-8351 Series C Type
(Without shutdown function, VDD / VOUT non-separate type)
Pin No.
1
2
3
Symbol
VSS
VOUT
CONT
Pin Description
GND pin
Output voltage pin and IC power supply pin
External inductor connection pin (Open-drain output)
Table 13 S-8352 Series C Type
(Without shutdown function, VDD / VOUT non-separate type)
Pin No.
1
2
3
Symbol
VSS
VOUT
EXT
Pin Description
GND pin
Output voltage pin and IC power supply pin
External transistor connection pin (CMOS output)
9