- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄170207 > CS3843BGDR14 1 A SWITCHING CONTROLLER, PDSO14 PDF資料下載
參數(shù)資料
| 型號(hào)： | CS3843BGDR14 |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, PDSO14 |
| 封裝： | SO-14 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | CS3843BGDR14 |
1
Features
VCC
Gnd
OSC
VFB
COMP
Sense
VREF
VOUT
Output
Enable
5V
Reference
Internal
Bias
NOR
S
R
PWM
Latch
Current
Sense
Comparator
Oscillator
1 V
R
2 R
VC
Error
Amplifier
+
–
2.50V
Set/
Reset
Undervoltage
Lock-out Circuit
34V
( ) Indicates CS-3843B
16V/10V
(8.4V/7.6V)
VCC Pwr
Pwr Gnd
REF
s
Very low Start Up Current
(300A typ)
s
Optimized Off-line
Control
s
Internally Trimmed,
Temperature
Compensated Oscillator
s
Maximum Duty-cycle
Clamp
s
VREF stabilization before
Output Enable
s
Pulse-by-pulse Current
Limiting
s
Improved Undervoltage
Lockout
s
Double Pulse Suppression
s
1% Trimmed Bandgap
Reference
s
High Current Totem Pole
Output
Package Options
CS3842B/3843B
Off-Line Current Mode PWM Control Circuit
with Very Low Start Up Current
CS3842B/CS3843B
Description
Block Diagram
Absolute Maximum Ratings
Supply Voltage (ICC<30mA) ..........................................................Self Limiting
Supply Voltage (Low Impedance Source)...................................................30V
Output Current ...............................................................................................±1A
Output Energy (Capacitive Load) .................................................................5J
Analog Inputs (VFB, 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
1
COMP
2
3
4
VFB
Sense
OSC
VREF
VCC
VOUT
Gnd
8
7
6
5
8 Lead PDIP & SO Narrow
10
7
14
13
12
8
1
2
3
4
5
6
11
9
COMP
NC
VFB
NC
Sense
NC
OSC
VREF
NC
VCC
VCC Pwr
VOUT
Pwr Gnd
Gnd
14L SO Narrow
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
The CS384XB provides all the neces-
sary features to implement off-line
fixed frequency current-mode control
with a minimum number of external
components. The family has been opti-
mized for very low start up current
(300A, typ).
The CS384XB family incorporates a
precision temperature-controlled oscil-
lator with an internally trimmed dis-
charge current to minimize variations
in frequency. A precision duty-cycle
clamp eliminates the need for an exter-
nal oscillator when a 50% duty-cycle is
used. Duty-cycles of almost 100% are
possible. On board logic ensures that
VREF is stabilized before the output
stage is enabled. Ion-implant resistors
provide tighter control of undervoltage
lockout.
Other features include pulse-by-pulse
current limiting, and a high-current
totem pole output for driving capaci-
tive loads, such as the gate of a power
MOSFET. The output is LOW in the off
state, consistent with N-channel
devices.
These ICs are available in 8 and 14 lead
surface mount (SO) and 8 lead PDIP
packages.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CS3845GDWR16 | 1 A SWITCHING CONTROLLER, PDSO16 |
| CS2844LDWR16 | 1 A SWITCHING CONTROLLER, PDSO16 |
| CS3845GDR8 | 1 A SWITCHING CONTROLLER, PDSO8 |
| CS51023D16 | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| CS5124XDR8 | 1.5 A SWITCHING CONTROLLER, 440 kHz SWITCHING FREQ-MAX, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS3843BGDR8 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS3843BGN8 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS3843BN8 | 制造商:ON Semiconductor 功能描述: |
| CS3844 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述: |
| CS-3844 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。