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参数资料
| 型号： | MAX5038EAI33+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 46 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 90% |
| 电源电压： | 4.75 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 ~ 85°C |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
Dual-Phase, Parallelable, Average Current-Mode
Controllers
Pin Description
PIN
1, 13
2, 14
3
4
5, 7
6
8
9
10
11
12
15
16, 26
17, 25
18, 24
19, 23
20
21
22
27
28
NAME
CSP2,
CSP1
CSN2,
CSN1
PHASE
PLLCMP
CLP2,
CLP1
SGND
SENSE+
SENSE-
DIFF
EAN
EAOUT
EN
BST1,
BST2
DH1,
DH2
LX1, LX2
DL1, DL2
V CC
IN
PGND
CLKOUT
CLKIN
FUNCTION
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.
Current-Sense Differential Amplifier Negative Input. Senses the inductor current.
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 lock loop (see Phase-
Locked Loop section).
Current-Error Amplifier Output. Compensate the current loop by connecting an RC network to ground.
Signal Ground. Ground connection for the internal control circuitry.
Differential Output Voltage-Sensing Positive Input. Used to sense a remote load. Connect SENSE+ to
V OUT+ at the load. The MAX5038 regulates the difference between SENSE+ and SENSE- according to the
factory preset output voltage. The MAX5041 regulates the SENSE+ to SENSE- difference to +1.0V.
Differential Output Voltage-Sensing Negative Input. Used to sense a remote load. Connect SENSE- to
V OUT- or PGND at the load.
Differential Remote-Sense Amplifier Output. DIFF is the output of a precision unity-gain amplifier.
Voltage-Error Amplifier Inverting Input. Receives the output of the differential remote-sense amplifier.
Referenced to SGND.
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.
Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high-side FET driver supply.
Connect 0.47μF ceramic capacitors between BST_ and LX_.
High-Side Gate Driver Output. Drives the gate of the high-side MOSFET.
Inductor Connection. Source connection for the high-side MOSFETs. Also serves as the return terminal for
the high-side driver.
Low-Side Gate Driver Output. Synchronous MOSFET gate drivers for the two phases.
Internal +5V Regulator Output. V CC is derived internally from the IN voltage. Bypass to SGND with 4.7μF
and 0.1μF ceramic capacitors.
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.
Power Ground. Connect PGND, low-side synchronous MOSFET’s source, and V CC bypass capacitor
returns together.
Oscillator Output. CLKOUT is phase-shifted from CLKIN by the amount specified by PHASE. Use CLKOUT
to parallel additional MAX5038/MAX5041s.
CMOS Logic Clock Input. Drive the internal oscillator with a frequency range between 125kHz and 600kHz.
The PWM frequency defaults to the internal oscillator if CLKIN is connected 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.
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相关代理商/技术参数 |
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|---|---|
| MAX5038EAI33+ | 功能描述:电流型 PWM 控制器 Dual-Phase Parallelable Average RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5038EAI33+T | 功能描述:电流型 PWM 控制器 Dual-Phase Parallelable Average RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5038EAI33-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5039 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Voltage-Tracking Controllers for PowerPC.DSPs.and ASICs |
| MAX5039EUA | 功能描述:其他电源管理 V-Track Ctlr for PowerPC DSPs & ASICs RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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