S-8353A20MC-IQFT2X Datasheet, PDF (8/49 Pages) Seiko Instruments Inc – BUILT-IN TRANSISTOR SWITCHING REGULATOR

STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
S-8353/8354 Series
Rev.3.0_01
 Pin Configurations
SOT-23-3
Top view
1
Table 9 A, C and H Types
(Without shutdown function, VDD / VOUT non-separate type)
Pin No.
1
2
3
Symbol
VOUT
VSS
CONT
Description
Output voltage pin and IC power supply pin
GND pin
External inductor connection pin
2
3
Figure 4
SOT-23-5
Top view
5
4
123
Figure 5
SOT-89-3
Top view
123
Figure 6
Table 10 A and H Types
(With shutdown function, VDD / VOUT non-separate type)
Pin No. Symbol
Description
Shutdown pin
1
ON / OFF
“H”: Normal operation (Step-up operating)
“L”: Step-up stopped (Entire circuit stopped)
2
VOUT
Output voltage pin and IC power supply pin
3
NC^*1
No connection
4
VSS
GND pin
5
CONT
External inductor connection pin
*1. The NC pin indicates electrically open.
Table 11 D and J Types
(Without shutdown function, VDD / VOUT separate type)
Pin No. Symbol
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
*1. The NC pin indicates electrically open.
Table 12 A and H Types
(Without shutdown function, VDD / VOUT non-separate type)
Pin No.
1
2
3
Symbol
VSS
VOUT
CONT
Description
GND pin
Output voltage pin and IC power supply pin
External inductor connection pin
8