參數(shù)資料
型號(hào): SC4624
廠商: Semtech Corporation
英文描述: Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator
中文描述: 低輸入電壓,高效率及4A集成FET的同步降壓直流/直流穩(wěn)壓器
文件頁數(shù): 5/20頁
文件大?。?/td> 738K
代理商: SC4624
5
2007 Semtech Corp.
www.semtech.com
SC4624
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless otherwise specified, V
IN
= V
CC
=SYNC/EN=3.3V, R
OSC
=51.1K
,
R
ISET
=27.4K
,
T
A
= -40°C to 85°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Error Amplifier (Cont.)
Output Voltage Low, COMP
FB = 0.6V, I
COMP
= 1mA
0.1
0.25
V
Feedback Voltage
V
FB
0.4925
0.5
0.5075
V
Vcc = 2.3V to 5.5V
-2
+1
+2
%
Input Bias Current
(1)
I
FB
FB=V
REF
60
nA
Power Switches
High-Side P-MOSFET
R
DSH(on)
V
IN
=V
CC
=5V, I
SOURCE
= 1A, T
A
=T
J
=25 °C
74
100
m
Low Side N-MOSFET
R
DSL(on)
V
IN
=V
CC
=5V, I
SINK
= 1A, T
A
=T
J
=25 °C
47
85
m
Power Good
PGood Voltage Low
V
PGL
I
PGOOD
= 1mA
0.2
V
PGood Leakage Current
I
PGOOD
PGOOD = 5V
1
μ
A
PGood Delay Time
(1)
T
D
Vout rising or Vout falling
1024
clks
PGood High Window
With respect to nominal output,
T
A
=T
J
=25 °C
+8
+10
+15
%
Note:
(1) Guaranteed by design.
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