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參數(shù)資料
| 型號(hào)： | ASM8I18S42ERG-08-SX |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, GREEN, SOIC-8 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大小： | 689K |
| 代理商： | ASM8I18S42ERG-08-SX |
ASM8P18S42ER
ASM8P18S43ER
December 2005
ASM8P18S45ER
rev 1.2
PWM Controller with EMI Reduction
4 of 11
Notice: The information in this document is subject to change without notice.
Electrical Characteristics
Unless otherwise noted, VDD=15V, Capacitor on FSEL = 330pf, ISENS = 0.5V. Specifications are over the –40°C to +85°C ambient temperature range. Typical
values are at 25°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
ERROR AMPLIFIER SECTION
Input Bias Current
IBIAS
-170
A
Input Voltage
VI
Vpin1 = 2.5V
1.19
1.25
1.29
V
Open Loop Voltage Gain
AVOL
37
dB
Power Supply Rejection Ratio
PSRR
VSTART < VCC < VCC max
80
dB
Output Sink Current
IOL
VFB = 1.32V, VCOMP = 0.15V
-0.06
mA
Output Source Current
IOH
VFB = 1.18V, VCOMP = 4.17V
-0.13
mA
High Output Voltage
VOH
VFB = 1.25V, RL = 15K
3.6
V
Low Output Voltage
VOL
VFB = 1.25V
0.35
V
CURRENT SENSE SECTION
Over Current Protection
Threshold
VI(MAX)
FB = 0V (VCOMP = 5V)
0.90
1.00
1.10
V
Delay to output
TPD
VFB = 0V, Tested with
2V,20nS ISNS pulse
125
ns
Under Current Sense Period
TUCS
175
200
375
ms
Under Current Recovery Period
TUCSD
3
Cycles of PWM
Frequency
ASM8P18S42ER
1/4
ASM8P18S43ER
1/10
Cycle Skip
condition:
ISENS ≤
0.1V
ASM8P18S45ER
No
Skip
x fS
OUTPUT SECTION
Low Output Voltage
VOL
ISINK = 0.2A
0.312
0.424
0.57
V
High Output Voltage
VOH
ISOURCE = 0.2A
13.4
13.91
14.37
V
On Resistance, High
RDS(ON)H
ISOURCE = 0.2A
6.5
On Resistance, Low
RDS(ON)L
ISINK = 0.2A
2.5
Rise Time
tR
TA = 25°C, CL=1nF
20
nS
Fall Time
tF
TA = 25°C, CL=1nF
20
nS
Shoot Through Current
0
UVLO SECTION
ASM8P18S43ER,
ASM8P18S45ER,
5.8
9.5
Start threshold
Vth(START)
ASM8P18S42ER
12
16.5
V
ASM8P18S43ER,
ASM8P18S45ER
5.5
7.9
V
Stop Threshold
Vth(STOP)
ASM8P18S42ER,
7
11.9
PWM frequency
fS
40
400
kHz
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM8I18S42F-08-MX | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Voltage Mode PWM Controller with EMI Reduction |
| ASM8I18S42F-08-PX | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Voltage Mode PWM Controller with EMI Reduction |
| ASM8I18S42F-08-SX | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Voltage Mode PWM Controller with EMI Reduction |
| ASM8I18S43ERF-08-MX | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Voltage Mode PWM Controller with EMI Reduction |
| ASM8I18S43ERF-08-PX | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Voltage Mode PWM Controller with EMI Reduction |
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