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参数资料
| 型号： | MAX1876AEEG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 24-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 660kHz |
| 电源电压： | 4.5 V ~ 23 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Dual 180° Out-of-Phase Buck Controllers with
Sequencing/Prebias Startup and POR
V IN
6V - 23V
CMPSH-3A
R V+
4.7 ?
C V+
V+
V L
C VL
0.1 μ F
C IN1
2 × 10 μ F
0.22 μ F
4.7 ?
C BST1
0.1 μ F
BST1
BST2
4.7 ?
C BST2
0.1 μ F
4.7 μ F
C IN2
2 × 10 μ F
OUTPUT1
V OUT = 1.8V
L1
1.1 μ H
N H1*
DH1
DH2
N H2*
L2
1.1 μ H
OUTPUT2
V OUT = 2.5V
LX1
LX2
C OUT1
4 × 220 μ F
R1A
**
N L1*
DL1
DL2
N L2*
**
R2A
C OUT2
4 × 220 μ F
8.06k ?
PGND
15k ?
R COMP1
FB1
FB2
R COMP2
R1B
10k ?
C COMP1A
0.01 μ F
5.9k ?
C COMP1B
100pF
COMP1
COMP2
C COMP2B
100pF
8.2k ?
C COMP2A
6800pF
R2B
10k ?
D2
CMSSH-3
10k ?
OSC
MAX1858A
MAX1875A
MAX1876A
REF
GND
C REF
0.22 μ F
D3
CMSSH-3
CLOCK OUTPUT
CKO
SYNC
V L
118k ?
RESET OUTPUT
ON
RST (MAX1858A/
MAX1876A ONLY)
ILIM1
96.5k ?
140k ?
OFF
EN
84.5k ?
ILIM2
*IRF7811W
**OPTIONAL
Figure 1. Standard 600kHz Application Circuit
With dual, synchronized, out-of-phase operation, the
MAX1858A/MAX1875A/MAX1876As’ high-side MOSFETs
turn on 180° out-of-phase. The instantaneous input cur-
rent 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, allowing fewer or less expensive capacitors, and
reduces shielding requirements for EMI. The Out-of-
Phase Waveforms in the Typical Operating Charac-
teristics demonstrate synchronized 180° out-of-phase
operation.
Internal 5V Linear Regulator (V L )
All MAX1858A/MAX1875A/MAX1876A functions are
internally powered from an on-chip, low-dropout 5V
regulator. The maximum 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 MAX1858A/MAX1875A/MAX1876A
also employs an undervoltage lockout circuit that dis-
ables both regulators when V L falls below 4.2V. V L
should also be bypassed to GND with a 0.1μF capaci-
tor. When V L falls and UVLO is tripped, the device is
latched and V L must be discharged below 2.5V before
normal operation can resume.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1876EEG | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1876EEG+ | 功能描述:电压模式 PWM 控制器 Dual 180 Out PWM Step-Down RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1876EEG+T | 功能描述:电压模式 PWM 控制器 Dual 180 Out PWM Step-Down RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1876EEG-G05 | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1876EEG-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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