參數(shù)資料
型號(hào)： MAX1641EEE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Adjustable-Output, Switch-Mode Current Sources with Synchronous Rectifier
中文描述： SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁(yè)數(shù)： 5/11頁(yè)
文件大?。?/td> 116K
代理商： MAX1641EEE
M
Adjustable-Output, S witc h-Mode
Current S ourc e with S ync hronous Rec tifier
_______________________________________________________________________________________
5
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 2, T
A
= +25°C, unless otherwise noted.)
A: OUTPUT CURRENT, D0 = D1 = 0 1A/div
B: LOAD VOLTAGE, AC coupled, 500mV/div
V
IN
= 12V, V
SET
= 1V, R
LOAD
= 4
,
NOOUTPUT CAPACITOR
CURRENT-MODE CHANGE RESPONSE TIME
A
B
2ms/div
0A
0V
M
B
A
EXITING OFF MODE
M
A: D0 = D1 = 1 2V/div
B: OUTPUT CURRENT, 0.5A/div
V
IN
= 12V, R
LOAD
= 4
20
μ
s/div
______________________________________________________________Pin Desc ription
NAME
FUNCTION
1
LDOL
Internal, Ground-Referenced Low-Dropout Linear Regulator Output.
Bypass with a 0.1μF capacitor in parallel with a 4.7μF capacitor to GND.
2
TOFF
Off-Time Select Input. A resistor (R
TOFF
) connected from this pin to GND programs the off-time for the hys-
teretic PWM step-down converter. This resistor also sets the period in duty-cycle mode. See Duty-Cycle
Mode and Programming the Off-Time.
PIN
3, 4
D1, D0
Digital Inputs. Select mode of operation (Table 1).
5
CC
Constant-Current Loop Compensation Input. Bypass with a 0.01μF capacitor to GND.
8
TERM
Maximum Output Voltage Termination Input. When V
TERM
exceeds the reference voltage, the comparator
resets the internal PWM latch, shutting off the external P-channel FET.
7
SET
Current Select Input. Program the desired current level by applying a voltage at SET between 0V and V
REF
,
(I = V
SET
/ 13.3R
SENSE
). See Figure 3.
6
REF
Reference Voltage Output (V
REF
= 2V). Bypass with a 0.1μF capacitor to GND.
13
NDRV
Gate Drive for an optional N-channel FET synchronous rectifier
12
PGND
High-Current Ground Return for the output drivers
11
CS+
Positive Current-Sense Comparator Input
10
CS-
Negative Current-Sense Comparator Input
9
GND
Ground
14
PDRV
Gate Drive for the P-channel FET
15
LDOH
Internal, Input-Referenced Low-Dropout Linear Regulator Output.
Bypass with a 0.33μF capacitor to IN.
16
IN
Power-Supply Input. Input of the internal, low-dropout linear regulators.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1641EEE+ 功能描述:電流型 PWM 控制器 Adj-Out Switch Mode Current Source RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1641EEE+T 功能描述:電流型 PWM 控制器 Adj-Out Switch Mode Current Source RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1641EEE-T 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1642EUA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1642EUA+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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