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Número de pieza | S8353 | |
Descripción | (S8353 / S8354) PWM Control Switchable Built-in Transistor Switching Regulator | |
Fabricantes | Seiko Instruments | |
Logotipo | ||
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Rev.1.4_00
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE
BUILT-IN TRANSISTOR SWITCHING REGULATOR
S-8353/8354 Series
The S-8353/8354 Series is a CMOS step-up switching regulator which
mainly consists of a reference voltage source, an oscillation circuit, a
power MOS FET, an error amplifier, a phase compensation circuit, a PWM
control circuit (S-8353 Series) and a PWM / PFM switching control circuit
(S-8354 Series).
The S-8353/8354 Series can configure the step-up switching regulator with
an external coil, capacitor, and diode. In addition to the above features,
the small package and low current consumption make the S-8353/8354
Series ideal for portable equipment applications requiring high efficiency.
The S-8353 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 models),
an excellently designed error amplifier, and phase compensation circuits.
The S-8354 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 18.7 µA (3.3 V, 50 kHz, typ.)
During shutdown: 0.5 µA (max.)
• Duty ratio : Built-in PWM / PFM switching control circuit (S-8354 Series)
15 % to 83 % (30 kHz and 50 kHz models)
15 % to 78 % (250 kHz models)
• External parts : Coil, capacitor, and diode
• 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 : 30 kHz, 50 kHz, and 250 kHz selectable
• Soft start function : 6 ms (50 kHz, typ.)
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 communication devices
• 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.
1
1 page www.DataSheet4U.com
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
Rev.1.4_00
S-8353/8354 Series
4. Product Name List
(1) S-8353 Series
Table 4
Output
voltage
S-8353AxxMC
Series
S-8353AxxMA
Series
S-8353AxxUA
Series
S-8353CxxMA
Series
2.0 V
2.5 V
S-8353A20MC-IQF-T2
S-8353A25MC-IQK-T2
−
−
−−
−−
2.7 V
2.8 V
3.0 V
S-8353A27MC-IQM-T2
S-8353A28MC-IQN-T2
S-8353A30MC-IQP-T2
−
−
S-8353A30MA-IQP-T2
−−
−−
− S-8353C30MA-ISP-T2
3.3 V
3.6 V
S-8353A33MC-IQS-T2
−
S-8353A33MA-IQS-T2
−
S-8353A33UA-IQS-T2
S-8353A36UA-IQV-T2
−
−
3.8 V
4.0 V
4.5 V
S-8353A38MC-IQX-T2
−
S-8353A45MC-IRE-T2
−−
− S-8353A40UA-IQZ-T2
−−
−
−
−
5.0 V
5.5 V
S-8353A50MC-IRJ-T2
S-8353A55MC-IRO-T2
S-8353A50MA-IRJ-T2
−
S-8353A50UA-IRJ-T2
S-8353A55UA-IRO-T2
−
−
Remark Please contact the SII marketing department for products with an output voltage other than those specified above.
Table 5
Output
S-8353DxxMC
S-8353HxxMC
S-8353HxxUA
S-8353JxxMC
voltage
Series
Series
Series
Series
2.0 V
2.5 V
S-8353D20MC-IUF-T2
−
−
−
− S-8353J20MC-IYF-T2
− S-8353J25MC-IYK-T2
3.0 V
3.1 V
S-8353D30MC-IUP-T2
−
S-8353H30MC-IWP-T2
S-8353H31MC-IWQ-T2
− S-8353J30MC-IYP-T2
−−
3.2 V
3.3 V
− S-8353H32MC-IWR-T2 −
−
− S-8353H33MC-IWS-T2 S-8353H33UA-IWS-T2 −
3.5 V
3.8 V
− S-8353H35MC-IWV-T2 −
− S-8353H38MC-IWX-T2 −
−
−
4.0 V
4.5 V
− S-8353H40MC-IWZ-T2 −
− S-8353H45MC-IXE-T2
−
−
−
5.0 V
S-8353D50MC-IVJ-T2 S-8353H50MC-IXJ-T2
− S-8353J50MC-IZJ-T2
Remark Please contact the SII marketing department for products with an output voltage other than those specified above.
Seiko Instruments Inc.
5
5 Page www.DataSheet4U.com
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
Rev.1.4_00
S-8353/8354 Series
(2) 30 kHz Product (C Type)
Table 14
(Ta = 25°C unless otherwise specified)
Item Symbol
Condition
Min. Typ. Max.
Unit
Measurement
circuit
Output voltage
Input voltage
Operation start voltage
Oscillation start voltage
Operation holding voltage
VOUT
VIN
VST1
VST2
VHLD
−
−
IOUT = 1 mA
No external parts, Voltage applied to VOUT
IOUT = 1 mA, Judged by decreasing VIN
voltage gradually
VOUT(S)
× 0.976
−
−
−
VOUT(S)
−
−
−
VOUT(S)
× 1.024
10
0.9
0.8
0.7 −
−
V
V
V
V
V
2
2
2
1
2
Current consumption 1
ISS1
Current consumption 2
ISS2
Switching current
ISW
Switching transistor leakage
current
ISWQ
VOUT = VOUT(S) × 0.95
VOUT = VOUT(S) + 0.5 V
VCONT = 0.4 V
VCONT = VOUT = 10 V
S-835xx20 to 29 −
9.8 16.4
S-835xx30 to 39 − 13.1 21.9
S-835xx40 to 49 − 16.8 28.0
S-835xx50 to 59 − 20.7 34.5
S-835xx60 to 65 − 24.8 41.4
S-835xx20 to 29 − 435 9.0
S-835xx30 to 39 −
4.7 9.4
S-835xx40 to 49 −
4.9 9.7
S-835xx50 to 59 −
5.1 10.1
S-835xx60 to 65 −
5.2 10.4
S-835xx20 to 24 52 83
−
S-835xx25 to 29 62 100 −
S-835xx30 to 39 72 115 −
S-835xx40 to 49 88 141 −
S-835xx50 to 59 100 160 −
S-835xx60 to 65 108 172 −
− − 0.5
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
mA
mA
mA
mA
mA
mA
µA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Line regulation
Load regulation
Output voltage temperature
coefficient
∆VOUT1
∆VOUT2
∆VOUT
∆Ta • VOUT
VIN = VOUT(S) × 0.4 to × 0.6
IOUT = 10 µA to VOUT(S) / 250 × 1.25
Ta = −40 to +85°C
− 30 60 mV
− 30 60 mV
− ±50 − ppm / °C
2
2
2
Oscillation frequency
Maximum duty ratio
PWM / PFM switching duty
ratio (For S-8354 Series)
fOSC
MaxDuty
PFMDuty
VOUT = VOUT(S) × 0.95
VOUT = VOUT(S) × 0.95
VIN = VOUT(S) − 0.1 V, No-load
25 30 35 kHz
75 83 90
%
10 15 24
%
1
1
1
Soft start time
Efficiency
tSS
EFFI
−
3.0 6.0 12.0 ms
2
−
− 84 −
%
2
External parts
Coil:
CDRH6D28-101 of Sumida Corporation
Diode:
MA2Z748 (Shottky type) of Matsushita Electric Industrial Co., Ltd.
Capacitor: F93 (16 V, 22 µF tantalum type) of Nichicon Corporation
VIN = VOUT(S) × 0.6 applied, IOUT = VOUT(S) / 250 Ω
Remark VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage.
Seiko Instruments Inc.
11
11 Page |
Páginas | Total 45 Páginas | |
PDF Descargar | [ Datasheet S8353.PDF ] |
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