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參數(shù)資料
| 型號(hào)： | CS2841BEN8 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | Automotive Current Mode PWM Control Circuit |
| 中文描述： | 汽車電流模式PWM控制電路 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大小： | 162K |
| 代理商： | CS2841BEN8 |
1
1
COMP
2
3
4
V
FB
Sense
OSC
V
REF
V
CC
V
OUT
Gnd
8
7
6
5
V
CC
Gnd
OSC
V
FB
COMP
Sense
V
REF
V
OUT
Output
Enable
5V
Reference
Internal
Bias
NOR
S
R
PWM
Latch
Current
Sensing
Comparator
Oscillator
1 V
R
2 R
V
C
AmError
+
–
8.0V/7.4V
2.50V
Set/
Reset
Undervoltage
Lock-out Circuit
V
CC
Pwr
Pwr Gnd
I
Optimized for Off-line
Control
Internally Trimmed
Temperature
Compensated Oscillator
Maximum Duty-cycle
Clamp
V
Stabilized before
Output Stage Enabled
Low Start-up Current
Pulse-by-pulse Current
Limiting
Improved Undervoltage
Lockout
Double Pulse Suppression
1% Trimmed Bandgap
Reference
High Current Totem Pole
Output
I
I
I
I
I
I
I
I
I
Package Options
8 Lead PDIP
10
7
14
13
12
8
1
2
3
4
5
6
11
9
COMP
NC
V
FB
NC
Sense
NC
OSC
V
REF
NC
V
CC
V
CC
Pwr
V
OUT
Pwr Gnd
Gnd
14 Lead SO Narrow
C
Automotive Current Mode PWM
Control Circuit
Description
CS2841B
The CS2841B provides all the nec-
essary features to implement off-
line fixed frequency current-mode
control with a minimum number of
external components.
The CS2841B (a variation of the
CS-2843A) is designed specifically
for use in automotive operation.
The low start threshold voltage of
8.0V (typ), and the ability to sur-
vive 40V automotive load dump
transients are important for auto-
motive subsystem designs. The
CS-2841 series has a history of
quality and reliability in automo-
tive applications.
The CS2841B incorporates a preci-
sion temperature-controlled oscil-
lator with an internally trimmed
discharge current to minimize vari-
ations in frequency. Duty-cycles
greater than 50% are also possible.
On board logic ensures that V
REF
is
stabilized before the output stage
is enabled. Ion implant resistors
provide tighter control of under-
voltage lockout.
Block Diagram
Absolute Maximum Ratings
Supply Voltage (Low Impedance Source)...................................................40V
Output Current...............................................................................................±1A
Output Energy (Capacitive Load) .................................................................5μJ
Analog Inputs (V
FB
, Sense) ............................................................-0.3V to 5.5V
Error Amp Output Sink Current...............................................................10mA
Lead Temperature Soldering
Wave Solder (through hole styles only)..........10 sec. max, 260°C peak
Reflow (SMD styles only)...........60 sec. max above 183°C, 230°C peak
Features
Rev. 6/23/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
A
Company
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| CS2841BED14 | Automotive Current Mode PWM Control Circuit |
| CS2841BEDR14 | Automotive Current Mode PWM Control Circuit |
| CS2841B | Automotive Current Mode PWM Control Circuit |
| CS2842A | Off-Line Current Mode PWM Control Circuit with Undervoltage Lockout |
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