S-8352 Seiko Instruments, S-8352 Datasheet - Page 13

• Manufacturer Part Number: S-8352
• Description: (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR
• Manufacturer: Seiko Instruments

www.DataSheet4U.com
External parts
V
With shutdown function :
For V
Remark 1.
(With shutdown function)
(With shutdown function)
Efficiency
ON
ON
Rev.2.0
IN
= V
/
/
DD
OFF
OFF
Coil:
Diode:
Capacitor:
Transistor:
Base resistor (Rb):
Base capacitor (Cb):
OUT(S)
STEP-UP, SUPER-SMALL PACKAGE, PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
/ V
2.
OUT
pin input voltage
pin input current
Item
_00
× 0.6 applied, I
V
voltage.
V
A step-up operation is performed from V
output voltage and oscillation frequency. (V
1.9 V.)
separate type : VDD pin is connected to VOUT pin
OUT(S)
DD
/ V
OUT
specified above is the set output voltage value, and V
separate type
OUT
V
V
V
I
I
EFFI
SH
SL
SH
SL1
SL2
CDRH6D28-101 (100 µ H) from Sumida Corporation
MA2Z748 (Shottky type) from Matsushita Electric Industrial Co., Ltd.
F93 (16 V, 47 µ F tantalum type) from Nichicon Corporation
CPH3210 from Sanyo Electric Co., Ltd.
1 k Ω
2200 pF (ceramic type)
Symbol
ON
= V
/
OUT(S)
OFF
/ 100 Ω
pin is connected to V
V
V
V
Measured oscillation at EXT
V
Judged oscillation stop at
EXT pin
ON
ON
OUT
OUT
/
/
OFF
OFF
= V
= V
OUT(S)
OUT(S)
Seiko Instruments Inc.
= 10 V
= 0 V
−
× 0.95,
× 0.95,
Table 16 (2 / 2)
DD
Condition
= 0.8 V. However, 1.8 V ≤ V
DD
≥ 1.8 V must be applied for products with a set value of less than
OUT
At V
At V
S-8352x30
S-8352x50
OUT
OUT
≥1.5 V
<1.5 V
OUT
－ 0.1
− 0.1
0.75
Min.
is the typical value of the actual output
−
−
−
−
DD
(Ta = 25 ° C unless otherwise specified)
≤ 10 V  i s recommended stabilizing the
Typ.
83
85
−
−
−
−
−
S-8351/8352 Series
Max.
0.3
0.2
0.1
0.1
−
−
−
Unit
µA
µA
%
%
V
V
V
Measurement
circuit
4
4
4
4
4
3
3
13