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参数资料
| 型号： | MAX15034AAUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 28TSSOP |
| 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-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
V DD
CLP_
CSP_
CSN_
A V = 36V/V
g m = 500 μ S
PWM
GM IN
COMPARATOR
BST_
RAMP
S
Q
DH_
2 x f SW (V/S)
LX_
CLK
R
Q
DL_
1.225V
EN_
Figure 3. Current Comparator and MOSFET Driver Logic
V OUT
V CNTR + ? V OUT /2
PGND
R 1
R F
V CNTR
C OUT
LOAD
R 2
EAN_
EAOUT_
V CNTR - ? V OUT /2
V REF = 0.61V
NO LOAD
1/2 LOAD
LOAD (A)
FULL LOAD
Figure 4. Voltage Error Amplifier
MOSFET Gate Drivers (DH_, DL_)
The high-side drivers (DH1 and DH2) and low-side dri-
vers (DL1 and DL2) drive the gates of external n-channel
MOSFETs. The high-peak sink and source current capa-
bility of these drivers provides ample drive for the fast
rise and fall times of the switching MOSFETs. Faster rise
and fall times result in reduced switching losses. For low-
output, voltage-regulating applications where the duty
Figure 5. Defining the Voltage-Positioning Window
cycle is less than 50%, choose high-side MOSFETs (Q2
and Q4, Figure 6) with a moderate R DS(ON) and a very
low gate charge. Choose low-side MOSFETs (Q1 and
Q3, Figure 6) with very low R DS(ON) and moderate gate
charge. The driver block also includes a logic circuit that
provides an adaptive nonoverlap time (30ns typ) to pre-
vent shoot-through currents during transition. Figure 7
shows the dual-phase, single-output buck regulator.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15034AAUI+ | 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 |
| MAX15034AAUI+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 |
| 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 |
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