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参数资料
| 型号： | S-8338ABCA-P8T1G |
| 元件分类： | 稳压器 |
| 英文描述： | 0.16 A SWITCHING CONTROLLER, 1246.3 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, SON-8 |
| 文件页数： | 50/51页 |
| 文件大小： | 446K |
| 代理商： | S-8338ABCA-P8T1G |
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STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8337/8338 Series
Rev.4.0_00
8
Seiko Instruments Inc.
2. S-8338 Series
Table 5 Electrical Characteristics
(Unless otherwise specified: VIN = 3.3 V, Ta = 25°C)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Test
Circuit
Operating input voltage
VIN
1.8
6.0
V
2
FB voltage
VFB
0.985
1.000
1.015
V
2
Current consumption
ISS1
fosc = 700 kHz
VFB = 0.95 V
400
700
μA
1
Shutdown current
consumption
ISSS
VIN = 6.0 V
1.0
μA
1
IEXTH
VEXT = VIN 0.4 V
100
60
mA
1
EXT pin output current
IEXTL
VEXT = 0.4 V
100
160
mA
1
FB voltage temperature
coefficient
ΔV
FB
ΔTa
Ta
= 40°C to +85°C
±100
ppm/
°C2
FB pin input current
IFB
0.1
+0.1
μA
1
Oscillation frequency
*1
fosc
fosc = 1133 kHz (ROSC = 120 kΩ)
fosc = 700 kHz (ROSC = 200 kΩ)
fosc = 286 kHz (ROSC = 510 kΩ)
VFB = 0.9 V
Waveform on EXT pin is measured
fosc
× 0.9
fosc
× 1.1
kHz
1
Oscillation frequency
temperature coefficient
Δf
osc
ΔTa
Ta
= 40°C to +85°C
fosc = 700 kHz
1000
ppm/
°C1
Max. duty ratio
MaxDuty fosc = 700 kHz (ROSC = 200 kΩ)
83
88
93
%
1
Soft-start time
tSS
tSS = 10 ms, 15 ms, 20 ms
Selectable in three steps
tSS
× 0.75
tSS
× 1. 5
ms
1
Short-circuit protection
delay time
*2
tPRO
tPRO = 50 ms
(CSP
= 0.1 μF)
37.5
50
75
ms
1
UVLO detection voltage
VUVLO
VUVLO = 1.5 V to 2.3 V
Selected in 0.1 V steps
VUVLO
× 0.95
VUVLO
× 1.05
V
1
UVLO hysteresis width
VUVLOHYS
VUVLOHYS = 0.1 V to 0.3 V
Selected in 0.1 V steps
VUVLOHYS
× 0.6
VUVLOHYS
× 1.4
mV
1
ICCH
VFB = 2 V
75
50
37.5
μA
1
CC pin output current
ICCL
VFB = 0 V
37.5
50
75
μA
1
Timer latch reset
voltage
VRTLT
0.7
1.0
1.3
V
1
Shutdown pin input
voltage (High level)
VSH
1.8
V
1
Shutdown pin input
voltage (Low level)
VSL
0.3
V
1
Shutdown pin input
current (High level)
ISH
0.1
+0.1
μA
1
Shutdown pin input
current (Low level)
ISL
0.1
+0.1
μA
1
*1. The recommended range of the resistance (Rosc) for setting the oscillation frequency is Rosc = 120 kΩ to 510 kΩ (fosc = 286 kHz to 1.133
MHz). However, the oscillation frequency is in the range of typical values when an ideal resistor is externally connected, so actually
the fluctuation of the IC (
±10%) must be considered.
*2. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external capacitor is unlimited
when an ideal case is assumed. But, use CSP = approximately 0.47 μF as a target maximum value due to the need to consider the
discharge time of the capacitor.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S-8338ABCB-P8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:STEPUP1.2MHZ PWM SWR |
| S-8338ABDA-T8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:STEP-UP, 1.2 MHZ HIGH-FREQUENCY, PWM CONTROL - Tape and Reel |
| S-8338ACAC-P8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:STEPUP1.2MHZ PWM SWR |
| S-8338ACBB-P8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:STEPUP1.2MHZ PWM SWR |
| S-8338ACBC-P8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:STEPUP1.2MHZ PWM SWR |
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