S-8352 Datasheet PDF - Seiko Instruments
| Part Number | S-8352 | |
| Description | (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR | |
| Manufacturers | Seiko Instruments | |
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Rev.2.0_00
STEP-UP, SUPER-SMALL PACKAGE, PFM CONTROL
SWITCHING REGULATOR / SWITCHING REGULATOR
CONTROLLER
S-8351/8352 Series
The S-8351/8352 Series is a CMOS step-up switching regulator controller
which mainly consists of a reference voltage source, an oscillation circuit,
a comparator and PFM control circuit. The PFM control circuit allows the
duty ratio to be automatically switched according to the load (at light load :
50%, at high output current : 75%), enabling products with a low ripple
over a wide range, high efficiency, and high output current (A, B, and D
type). Products with a fixed duty ratio of 75% are also available (C type).
The S-8351 Series can configure a step-up switching regulator with an
external coil, capacitor, and diode. A protection circuit turns off the built-in
MOS FET when the voltage at the CONT pin exceeds the limit to prevent it
from being damaged. In addition to the above features, the small package
and low current consumption, makes the S-8351 Series ideal for
applications such as the power supply unit of portable equipment.
The S-8352 Series, which features an external transistor, is suitable for
applications requiring a high output current.
Features
• Low voltage operation : Startup at 0.9 V min. (IOUT = 1 mA) guaranteed
• Low current consumption : During operation 23.2 µA (VOUT = 3.3 V, typ.)
During shutdown 0.5 µA (max.)
• Duty ratio : 50 % / 75 % built-in auto-switching-type PFM control circuit (A, B, and D type)
75 % built-in fixed-type PFM control circuit (C type)
• External parts : Coil, capacitor, and diode
• Output voltage : Selectable in 0.1 V steps between 2.0 to 6.5 V (A, B, and C type)
Selectable in 0.1 V steps between 1.5 to 6.5 V (D type)
• Output voltage accuracy : ±2.4%
• Shutdown function (A type)
www.Data•SVheDeDt4/ UV.OcUoTmseparate type (D type)
• External transistor type available (S-8352 Series)
• Lead-free products
Applications
• Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs
• Power supplies for audio equipment such as portable CD / MD players
• Constant voltage power supplies for cameras, video equipment, and communications equipment
• Power supplies for microcomputers
Packages
Package Name
SOT-23-3
SOT-23-5
SOT-89-3
Package
MP003-A
MP005-A
UP003-A
Drawing Code
Tape
MP003-A
MP005-A
UP003-A
Reel
MP003-A
MP005-A
UP003-A
Seiko Instruments Inc.
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STEP-UP, SUPER-SMALL PACKAGE, PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
Rev.2.0_00
S-8351/8352 Series
2. Package and Function List by Product Type
Table 3
Series Name
S-8351 Series,
S-8352 Series
Type
A (Duty ratio 50% / 75% auto-switching type)
A = 100 kHz
B (Duty ratio 50% / 75% auto-switching type)
B = 100 kHz
C (Duty ratio 75% fixed type)
C = 100 kHz
D (Duty ratio 50% / 75% auto-switching type)
D = 100 kHz
Package Name
(Abbreviation)
MC
MA
MA / UA
MC
Shutdown Function VDD / VOUT Separate Type
Yes / No
Yes / No
Yes No
No No
No No
No Yes
3. Product Name
S-835 x x xx xx - xxx T2 G
IC direction in tape specifications *1
Product code *2
Package code
MA : SOT-23-3
MC : SOT-23-5
UA : SOT-89-3
Output voltage
15 to 55
(e.g. When the output voltage is 1.5 V, it is expressed as 15.)
www.DataSheet4U.com
Product type
A : With shutdown function,
fOSC = 100 kHz
B : 50% / 75% automatic duty ratio switching type, fOSC = 100 kHz
C : 75% duty ratio fixed type,
fOSC = 100 kHz
D : VDD / VOUT separate type,
fOSC = 100 kHz
Series name
1 : Built-in power MOS FET
2 : External power MOS FET
*1. Refer to the taping specifications.
*2. Refer to the Table 4 to Table 5 in the “4. Product Name List”.
Seiko Instruments Inc.
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for S-8352 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ S-8352.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| S-8351 | The function is (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR. Seiko Instruments | |
| S-8352 | The function is (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR. Seiko Instruments | |
| S-8353 | The function is (S-8353 / S-8354) PWM Control Switchable Built-in Transistor Switching Regulator. Seiko Instruments | |
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