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参数资料
| 型号： | MAX15034BAUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 28TSSOP-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 或 2 |
| 频率 - 最大： | 1MHz |
| 电源电压： | 4.75 V ~ 5.5 V，5 V ~ 28 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 ~ 125°C |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
Pin Description (continued)
PIN
15
16
17
18
19
20
21
22
23
24
25
26
27
28
—
NAME
EN1
BST1
DH1
LX1
DL1
V DD
REG
IN
PGND
DL2
LX2
DH2
BST2
EN2
EP
FUNCTION
Output 1 Enable. A logic-low shuts down channel 1’s MOSFET drivers. EN1 can be used for output
sequencing.
Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high-side MOSFET driver
supply. Connect a 0.47μF ceramic capacitor between BST1 and LX1.
High-Side Gate Driver Output 1. DH1 drives the gate of the high-side MOSFET.
External Inductor Connection and Source Connection for the High-Side MOSFET for Output 1. LX1 also
serves as the return terminal for the high-side MOSFET driver.
Low-Side Gate Driver Output 1. Gate driver output for the synchronous MOSFET.
Supply Voltage for Low-Side Drivers. REG powers V DD . Connect a parallel combination of 0.1μF and 1μF
ceramic capacitors from V DD to PGND and a 1 ? resistor from V DD to REG to filter out the high-peak
currents of the driver from the internal circuitry.
Internal 5V Regulator Output. REG is derived internally from IN and is used to power the internal bias
circuitry. Bypass REG to AGND with a 4.7μF ceramic capacitor.
Supply Voltage Connection. Connect IN to a 5V to 28V input supply.
Power Ground. Source connection for the low-side MOSFET. Connect V DD ’s bypass capacitor returns to
PGND.
Low-Side Gate Driver Output 2. Gate driver for the synchronous MOSFET.
External Inductor Connection and Source Connection for the High-Side MOSFET for Output 2. Also serves
as the return terminal for the high-side MOSFET driver.
High-Side Gate Driver Output 2. DH2 drives the gate of the high-side MOSFET.
Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high-side MOSFET driver
supply. Connect a 0.47μF ceramic capacitor between BST2 and LX2.
Output 2 Enable. A logic-low shuts down channel 2’s MOSFET drivers. EN2 can be used for output
sequencing.
Exposed Pad. Connect exposed pad to ground plane (MAX15034BAUI only).
Detailed Description
The MAX15034 switching power-supply controller can
be configured two ways. With the MODE input high, this
device operates as single-output, dual-phase, step-
down switching regulators where each output is 180°
out of phase. With MODE connected low, the
MAX15034 operates as a dual-output, step-down
switching regulator. The average current-mode control
topology of the MAX15034 offers high-noise immunity
while having benefits similar to those of peak current-
mode control. Average current-mode control has the
intrinsic ability to accurately limit the average current
sourced by the converter during a fault condition. When
a fault condition occurs, the error-amplifier output volt-
age (EAOUT1 or EAOUT2) that connects to the positive
input of the transconductance amplifier (CA1 or CA2) is
clamped, thus limiting the output current.
The MAX15034 has internal logic to ensure each output’s
monotonic startup under prebias load conditions. This
facilitates glitch-free output voltage power-up in the pres-
ence of another redundant/parallel voltage regulator.
The MAX15034 contains all blocks necessary for two
independently regulated average current-mode PWM
regulators. This device has two voltage error amplifiers
(VEA1 and VEA2), two current-error amplifiers (CEA1
and CEA2), two current-sensing amplifiers (CA1 and
CA2), two PWM comparators (CPWM1 and CPWM2),
and drivers for both low- and high-side power MOSFETs
(see Figure 1). Each PWM section is also equipped with
a pulse-by-pulse, current-limit protection and a fault
integration block for hiccup protection.
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15034BAUI+ | 功能描述:DC/DC 开关控制器 Configurable Synchronous Buck 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 |
| MAX15034BAUI+T | 功能描述:DC/DC 开关控制器 Configurable Synchronous Buck 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 |
| MAX15034BEVKIT+ | 功能描述:电源管理IC开发工具 MAX15034B Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX15035ETL+ | 功能描述:电压模式 PWM 控制器 15A Step-Down Reg w/Internal Switch 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 |
| MAX15035ETL+T | 功能描述:电压模式 PWM 控制器 15A Step-Down Reg w/Internal Switch 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 |
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