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PDF S-8356 Data sheet ( Hoja de datos )
| Número de pieza | S-8356 | |
| Descripción | PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER | |
| Fabricantes | Seiko Instruments | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de S-8356 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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S-8355/56/57/58 Series
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or
www.sii-ic.com
PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
© SII Semiconductor Corporation, 2002-2015
Rev.8.1_01
The S-8355/56/57/58 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage
source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8355/57 Series) and
a PWM/PFM switching control circuit (S-8356/58 Series).
With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a
high output current.
The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control
circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an
excellently designed error amplifier and a phase compensation circuits.
S-8356/58 Series features a PWM/PFM switching controller that can switch the operation to a PFM controller with a duty
ratio is 15% under a light load to prevent a decline in the efficiency due to the IC operating current.
Features
• Low voltage operation : Startup at 0.9 V min. (IOUT = 1 mA) guaranteed
• Low current consumption : During operation 25.9 μA (3.3 V, 100 kHz, typ.)
During shutdown 0.5 μA (max.)
• Duty ratio : Built-in PWM/PFM switching control circuit (S-8356/58 Series)
15 to 83% (100 kHz models)
15 to 78% (250 kHz, 300 kHz, and 600 kHz models)
• External parts : Coil, diode, capacitor, and transistor
• Output voltage : Selectable in 0.1 V steps between 1.5 and 6.5 V (for VDD / VOUT separate types)
Selectable in 0.1 V steps between 2.0 and 6.5 V (for other than VDD / VOUT separate types)
• Output voltage accuracy : ±2.4%
• Oscillation frequency : 100 kHz, 250 kHz, 300 kHz, 600 kHz selectable
• Soft start function : 6 ms (100 kHz, typ.)
• Shutdown function
• Lead-free, Sn 100%, halogen-free*1
*1. Refer to “ Product Name Structure” for details.
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, VCRs, and communications devices
• Power supplies for microcomputers
Packages
• SOT-23-3
• SOT-23-5
• SOT-89-3
1
1 page  
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.8.1_01
S-8355/56/57/58 Series
3. Product Name
(1) SOT-23-3 Packages
S-835 x x xx MA - xxx T2 G
Environmental code
G : Lead-free (for details, please contact our sales office)
IC direction in tape specifications *1
T2 : SOT-23-3
Product name (abbreviation) *2
Package name (abbreviation)
MA : SOT-23-3
Output voltage
15 to 65
(e.g. When the output voltage is 1.5 V, it is expressed as 15.)
Product type
B : Normal product,
(S-8357/58 Series)
H : Normal product,
(S-8357/58 Series)
F : Normal product,
(S-8357/58 Series)
N : Normal product,
(S-8357/58 Series)
E : VDD / VOUT separate type,
(S-8357/58 Series)
J : VDD / VOUT separate type,
(S-8357/58 Series)
G :VDD / VOUT separate type,
(S-8357/58 Series)
P : VDD / VOUT separate type,
(S-8357/58 Series)
K : With shutdown function + VDD / VOUT separate type,
(S-8355/56 Series)
L : With shutdown function + VDD / VOUT separate type,
(S-8355/56 Series)
M :With shutdown function + VDD / VOUT separate type,
(S-8355/56 Series)
Q :With shutdown function + VDD / VOUT separate type,
(S-8355/56 Series)
fOSC = 100 kHz
fOSC = 250 kHz
fOSC = 300 kHz
fOSC = 600 kHz
fOSC = 100 kHz
fOSC = 250 kHz
fOSC = 300 kHz
fOSC = 600 kHz
fOSC = 100 kHz
fOSC = 250 kHz
fOSC = 300 kHz
fOSC = 600 kHz
Control system
5 or 7 : PWM control
6 or 8 : PWM / PFM switching control
*1. Refer to the tape specifications.
*2. Refer to the Table 4 to Table 11 in the “5. Product Name List”.
5
5 Page 
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.8.1_01
S-8355/56/57/58 Series
SOT-89-3
Top view
123
Figure 7
Table 16 S-8357/58 Series B, H and F Types
(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
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet S-8356.PDF ] | |
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