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參數(shù)資料
| 型號(hào)： | MAX5003EEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | High-Voltage PWM Power-Supply Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大?。?/td> | 170K |
| 代理商： | MAX5003EEE |
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M
High-Voltage PWM
Power-Supply Controller
6
_______________________________________________________________________________________
0
2
3
4
5
6
7
8
9
10
0
5
10
15
20
V
CC
LOAD REGULATION
M
I
CC
(mA)
V
C
1
V+ = V
ES
= 12V TO 36V
V
DD
= UNCONNECTED
M
0
50
150
100
300
250
200
350
12
13
14
15
16
MAXIMUM FREQUENCY vs. INPUT VOLTAGE
AND FET TOTAL GATE-SWITCHING CHARGE
V+ (V)
M
25nC
30nC
10nC
15nC
20nC
Pin Description
Typical Operating Characteristics (continued)
(V
DD
= +12V, R
FREQ
= 200k
, R
MAXTON
= 200k
, T
A
= +25°C, unless otherwise noted.)
NAME
FUNCTION
1
V+
Preregulator Input. Connect to the power line for use with 25V to 110V line voltages. Bypass V+ to ground
with a 0.1μF capacitor, close to the IC. Connects internally to the drain of a depletion FET preregulator.
2
INDIV
Undervoltage Sensing and Feed-Forward Input. Connect to the center point of an external resistive divider
connected between the main power line and AGND. Undervoltage lockout takes over and shuts down
the controller when V
INDIV
< 1.2V. INDIV bias is typically 0.01μA.
PIN
3
ES
Preregulator Output. When V+ ranges above 36V, bypass ES to AGND with a 0.1μF capacitor close to
the IC. When V+ is always below 36V, connect ES to V+.
4
FREQ
Oscillator Frequency Adjust and Synchronization Input. In internal free-running mode, the voltage on this
pin is internally regulated to 1.25V. Connect a resistor between this pin and AGND to set the PWM fre-
quency. Drive between V
IL
and V
IH
at four times the desired frequency for external synchronization.
8
COMP
Compensation Connection. Output of the error amplifier, available for compensation.
7
CON
Control Input of the PWM Comparator
6
REF
Reference Voltage Output (3.0V). Bypass to AGND with a 0.1μF capacitor.
5
SS
Soft-Start Capacitor Connection. Ramp time to full current limit is approximately 0.5ms/nF. Limits duty
cycle when V
SS
< V
CON
.
10
MAXTON
Maximum On-Time Programming. A resistor from MAXTON to AGND sets the PWM gain and limits the
maximum duty cycle. The voltage on MAXTON tracks the voltage on the INDIV pin. Maximum on-time is
proportional to the value of the programming resistor. The maximum duty cycle is limited to 75%, regard-
less of the programming resistor.
9
FB
Feedback Input. Regulates to V
FB
= V
REF
/ 2 = 1.5V.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5003EEE+ | 功能描述:電壓模式 PWM 控制器 PWM Power-Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX5003EEE+G39 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX5003EEE+T | 功能描述:電壓模式 PWM 控制器 PWM Power-Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX5003EEE-T | 功能描述:電壓模式 PWM 控制器 PWM Power-Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX5003ESE | 功能描述:電壓模式 PWM 控制器 PWM Power-Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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