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參數(shù)資料
| 型號(hào)： | CS5112 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | 1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE |
| 中文描述： | 1.4A的開關(guān)穩(wěn)壓器采用5V，100mA的線性穩(wěn)壓器，帶有看門狗，復(fù)位和啟用 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 199K |
| 代理商： | CS5112 |
4
Typical Performance Characteristics
0A
20mA
40mA
60mA
80mA
100mA
3.5mA
4.0mA
4.5mA
I
LIN
I
R
L
-30mA
-40mA
0A
0.5A
I
SW
-20mA
-10mA
0A
1.0A
1.5A
2.0A
I
I
ISW
0A
0.5A
1.0A
1.5A
2.0A
0.4V
0.0V
0.6V
0.8V
1.2V
1.0V
V
S
0.2V
1.4V
Package Lead Description
PACKAGE LEAD #
24 Lead SO Wide
LEAD SYMBOL
FUNCTION
C
40
00
C
OSC
(pF)
80
120
160
1000
F
20
60
100
140
2000
3000
500
1500
2500
180
Figure 1a. 5V Regulator Bias Current vs. Load Current.
Figure 1b. Supply Current vs. Switch Current.
Figure 1c. Switch Saturation Voltage.
Figure 1d. Oscillator Frequency (kHz) vs. C
OSC
(pF), assuming R
BIAS
=
64.9k.
1
V
IN
NC
Supply Voltage.
2, 3
No connection.
4
V
SW
Gnd
Collector of NPN power switch for switching regulator section.
5,6,7,8,17,18,19,20
Connected to the heat removing leads.
9
V
FB1
V
FB2
SELECT
Feedback input voltage 1 (referenced to 1.25V)
10
Feedback input voltage 2 (referenced to 1.25V)
11
Logic level input that selects either V
FB1
or V
FB2
. An open selects
V
FB2
. Connect to Gnd to select V
FB1
.
Output of the transconductance error amplifier.
12
COMP
13
C
OSC
A capacitor connected to Gnd sets the switching frequency.
Refer to Figure 1d.
14
WDI
Watchdog input. Active on falling edge.
15
C
Delay
A capacitor connected to Gnd sets the Power On Reset and
Watchdog time.
16
output. Active low if V
LIN
is below the regulation limit.
If watchdog timeout is reached, a reset pulse train is issued.
21
I
BIAS
A resistor connected to Gnd sets internal bias currents as well as
the C
OSC
and C
Delay
charge currents.
Regulated 5V output from the linear regulator section.
22
V
LIN
V
REG
23
Input voltage to the linear regulator and the internal supply cir-
cuitry.
24
Logic level input to shut down the switching regulator.
ENABLE
RESET
RESET
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