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參數(shù)資料
| 型號(hào)： | ML4819 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Power Factor and PWM Controller “Combo” |
| 中文描述： | 功率因數(shù)和PWM控制器“組合” |
| 文件頁(yè)數(shù)： | 2/15頁(yè) |
| 文件大小： | 269K |
| 代理商： | ML4819 |
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ML4819
2
REV. 1.0 10/10/2000
PIN CONFIGURATION
PIN
NAME
FUNCTION
PIN
NAME
FUNCTION
1
I
SENSE
A
Input form the PFC current sense
transformer to the PWM comparator
(+). Current Limit occurs when this
point reaches 5V.
2
OVP
Input to Over-Voltage comparator.
3
GM OUT
Output of Gain Modulator. A resistor
to ground on this pin converts the
current to a voltage.
4
EA OUT A
Output of error amplifier.
5
INV A
Inverting input to error amplifier.
6
I
SINE
Current Multiplier input.
7
DUTY CYCLE PWM controller duty cycle is limited
by setting this pin to a fixed voltage.
8
PWM B
Error voltage feedback input.
9
I
SENSE
B
Input for Current Sense resistor for
current mode operation or for
Oscillator ramp for voltage mode
operation.
10
R
T
Oscillator timing resistor pin. A 5V
source across this resistor sets the
charging current for C
T
11
I
LIM
Cycle by cycle PWM current limit.
Exceeding 1V threshold on this pin
terminates the PWM cycle.
12
RAMP COMP Buffered output from the Oscillator
Ramp (C
T
). A resistor to ground sets a
current, 1/2 of which is sourced on
pins 9 and 11.
13
GND B
Return for the high current totem pole
output of the PWM controller.
14
OUT B
PWM controller totem pole output.
15
V
CC
Positive Supply for the IC.
16
OUT A
PFC controller totem pole output.
17
GND A
Return for the high current totem pole
output of the PFC controller.
18
V
REF
Buffered output for the 5V voltage
reference
19
GND
Analog signal ground.
20
C
T
Timing Capacitor for the Oscillator.
PIN DESCRIPTION
ML4819
20-Pin PDIP
I
SENSE
A
OVP
GM OUT
EA OUT A
INV A
I
SINE
DUTY CYCLE
PWM B
I
SENSE
B
R
T
C
T
GND
V
REF
PGND A
OUT A
V
CC
OUT B
PGND B
RAMP COMP
I
LIM
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TOP VIEW
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| ML4819CP | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 PFC Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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| ML4821 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Controller |
| ML482-1 | 制造商:CLARKE INTERNATIONAL 功能描述:CASTOR 102KG 4" SWIVEL/BRAK 制造商:CLARKE INTERNATIONAL 功能描述:CASTOR, 102KG, 4", SWIVEL/BRAKE 制造商:CLARKE INTERNATIONAL 功能描述:CASTOR, 102KG, 4", SWIVEL/BRAKE, For Use With:Industrial and Material Handling Applications, Carrying Capacity:102kg, Wheel Diameter:100mm , RoHS Compliant: NA |
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