參數(shù)資料
型號： MAX1876AEEG
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Fixed-Point Digital Signal Processor 288-BGA MICROSTAR
中文描述： DUAL SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO24
封裝： 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24
文件頁數(shù)： 8/21頁
文件大?。?/td> 493K
代理商： MAX1876AEEG
M
With dual synchronized out-of-phase operation, the
MAX1875/MAX1876
’
s high-side MOSFETs turn-on 180
°
out-of-phase. The instantaneous input current peaks of
both regulators no longer overlap, resulting in reduced
RMS ripple current and input voltage ripple. This reduces
the required input capacitor ripple-current rating, allow-
ing fewer or less expensive capacitors, and reduces
shielding requirements for EMI. The Out-of-Phase
Waveforms in the
Typical Operating Characteristics
demonstrate synchronized 180
°
out-of-phase operation.
Internal 5V Linear Regulator (V
L
)
All MAX1875/MAX1876 functions are internally powered
from an on-chip, low-dropout 5V regulator. The maxi-
mum regulator input voltage (V+) is 23V. Bypass the
regulator
’
s output (V
L
) with a 4.7μF ceramic capacitor
to PGND. The V
L
dropout voltage is typically 500mV, so
when V+ is greater than 5.5V, V
L
is typically 5V. The
MAX1875/MAX1876 also employs an undervoltage
lockout circuit that disables both regulators when V
L
falls below 4.5V. V
L
should also be bypassed to GND
with a 0.1μF capacitor.
Dual 180° Out-of-Phase PWM Step-
Down Controllers with POR
8
_______________________________________________________________________________________
V+
BST1
DH1
LX1
DL1
V
L
BST2
DH2
LX2
DL2
FB1
COMP1
*IRF7811W
**OPTIONAL
FB2
COMP2
PGND
REF
GND
OSC
SYNC
CKO
ILIM1
ILIM2
EN
OFF
ON
RESET OUTPUT
CLOCK OUTPUT
V
L
RST (MAX 1876 ONLY)
MAX1875
MAX1876
C
V+
0.22
μ
F
C
IN1
2
×
10
μ
F
C
OUT1
4
×
220
μ
F
N
H1*
N
L1*
L1
1
μ
H
OUTPUT1
V
OUT
= 1.8V
V
IN
6V - 23V
C
BST1
0.1
μ
F
R1A
8.06k
R1B
10k
R
5.9k
C
COMP1A
C
COMP1B
C
REF
0.22
μ
F
C
6.8nF
C
100pF
R
8.2k
R2B
10k
96.5k
140k
R2A
15k
4.7
4.7
R
V+
4.7
N
L2*
**
**
N
H2*
L2
1.2
μ
H
C
OUT2
4
220
μ
F
C
IN2
2
×
10
μ
F
OUTPUT2
V
OUT
= 2.5V
C
BST2
0.1
μ
F
C
VL
4.7
μ
F
0.1
μ
F
118k
D3
CMSSH-3
84.5k
D2
CMSSH-3
Figure 1. Standard Application Circuit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1876AEEG+ 功能描述:電壓模式 PWM 控制器 Dual 180 Out PWM Step-Down 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
MAX1876AEEG+T 功能描述:電壓模式 PWM 控制器 Dual 180 Out PWM Step-Down 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
MAX1876AEEG-T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1876EEG 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1876EEG+ 功能描述:電壓模式 PWM 控制器 Dual 180 Out PWM Step-Down 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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