參數(shù)資料
型號(hào)： MAX5041BEAI
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C
中文描述： SWITCHING CONTROLLER, 525 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 5.30 MM, MO150, SSOP-28
文件頁(yè)數(shù)： 9/26頁(yè)
文件大?。?/td> 680K
代理商： MAX5041BEAI
M
Dual-Phase, Parallelable, Average-Current-Mode
Controllers
_______________________________________________________________________________________
9
Pin Description
PIN
NAME
FUNCTION
1, 13
CSP2,
CSP1
Current-Sense Differential Amplifier Positive Input. Senses the inductor current. The differential voltage
between CSP_ and CSN_ is amplified internally by the current-sense amplifier gain of 18.
2, 14
CSN2,
CSN1
Current-Sense Differential Amplifier Negative Input. Together with CSP_, senses the inductor current.
3
PHASE
Phase-Shift Setting Input. Connect PHASE to V
CC
for 120
°
, leave PHASE unconnected for 90
°
, or connect
PHASE to SGND for 60
°
of phase shift between the rising edges of CLKOUT and CLKIN/DH1.
External Loop-Compensation Input. Connect compensation network for the phase-locked loop (see
Phase-
Locked Loop
section).
4
PLLCMP
5, 7
CLP2,
CLP1
SGND
Current-Error Amplifier Output. Compensate the current loop by connecting an RC network to ground.
6
Signal Ground. Ground connection for the internal control circuitry.
8
SENSE+
Differential Output Voltage-Sensing Positive Input. Used to sense a remote load. Connect SENSE+ to
V
OUT+
at the load. The MAX5038A regulates the difference between SENSE+ and SENSE- according to the
factory preset output voltage. The MAX5041A regulates the SENSE+ to SENSE- difference to +1.0V.
9
SENSE-
Differential Output Voltage-Sensing Negative Input. Used to sense a remote load. Connect SENSE- to
V
OUT-
or PGND at the load.
10
DIFF
Differential Remote-Sense Amplifier Output. DIFF is the output of a precision unity-gain amplifier.
11
EAN
Voltage-Error Amplifier Inverting Input. Receives the output of the differential remote-sense amplifier.
Referenced to SGND.
12
EAOUT
Voltage-Error Amplifier Output. Connect to the external gain-setting feedback resistor. The external error
amplifier gain-setting resistors determine the amount of adaptive voltage positioning
Output Enable. A logic low shuts down the power drivers. EN has an internal 5μA pullup current.
15
EN
16, 26
BST1,
BST2
Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high-side FET driver supply.
Connect a 0.47μF ceramic capacitor between BST_ and LX_.
17, 25
DH1,
DH2
High-Side Gate Driver Output. Drives the gate of the high-side MOSFET.
18, 24
LX1, LX2
Inductor Connection. Source connection for the high-side MOSFETs. Also serves as the return terminal for
the high-side driver.
19, 23
DL1,
DL2
Low-Side Gate Driver Output. Synchronous MOSFET gate drivers for the two phases.
20
V
CC
Internal +5V Regulator Output. V
CC
is derived internally from the IN voltage. Bypass to SGND with 4.7μF
and 0.1μF ceramic capacitors.
21
IN
Supply Voltage Connection. Connect IN to V
CC
for a +5V system. Connect the VRM input to IN through an
RC lowpass filter, a 2.2
resistor, and a 0.1μF ceramic capacitor.
22
PGND
Power Ground. Connect PGND, low-side synchronous MOSFET
’
s source, and V
CC
bypass capacitor returns
together.
27
CLKOUT
Oscillator Output. CLKOUT is phase shifted from CLKIN by the amount specified by PHASE. Use CLKOUT
to parallel additional MAX5038A/MAX5041As.
CMOS Logic Clock Input. Drive the internal oscillator with a frequency range between 125kHz and 600kHz,
or connect to V
CC
or SGND. Connect CLKIN to SGND to set the internal oscillator to 250kHz or connect to
V
CC
to set the internal oscillator to 500kHz. CLKIN has an internal 5μA pulldown current.
28
CLKIN
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
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MAX5041BEAI-T 功能描述:電流型 PWM 控制器 Dual-Phase Parallelable Average RoHS:否 制造商:Texas Instruments 開(kāi)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
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