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参数资料
| 型号： | MAX5038EAI33+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/26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： | 2,000 |
| 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： | 带卷 (TR) |
Dual-Phase, Parallelable, Average Current-Mode
Controllers
Use the following equations to calculate C CF and C CFF :
Pin Configuration
C CF =
1
2 × π × f Z × R CF
(30)
TOP VIEW
CSP2 1
28 CLKIN
C CFF =
1
2 × π × f P × R CF
(31)
CSN2 2
PHASE 3
27 CLKOUT
26 BST2
PC Board Layout
PLLCMP 4
25 DH2
Use the following guidelines to layout the switching
voltage regulator.
1) Place the V IN and V CC bypass capacitors close to
the MAX5038/MAX5041.
2) Minimize the high-current loops from the input
capacitor, upper switching MOSFET, inductor, and
output capacitor back to the input capacitor nega-
tive terminal.
3) Keep short the current loop from the lower switch-
ing MOSFET, inductor, and output capacitor and
return to the source of the lower MOSFET.
4) Place the Schottky diodes close to the lower
MOSFETs and on the same side of the PC board.
5) Keep the SGND and PGND isolated and connect
CLP2 5
SGND 6
CLP1 7
SENSE+ 8
SENSE- 9
DIFF 10
EAN 11
EAOUT 12
CSP1 13
CSN1 14
MAX5038A
MAX5041A
SSOP
24 LX2
23 DL2
22 PGND
21 IN
20 V CC
19 DL1
18 LX1
17 DH1
16 BST1
15 EN
them at one single point close to the negative termi-
nal of the input filter capacitor.
6) Run the current-sense lines CS+ and CS- very
close to each other to minimize the loop area.
Similarly, run the remote voltage sense lines
SENSE+ and SENSE- close to each other. Do not
cross these critical signal lines through power cir-
cuitry. Sense the current right at the pads of cur-
rent-sense resistors.
7) Avoid long traces between the V CC bypass capaci-
tors, driver output of the MAX5038/MAX5041,
MOSFET gates and PGND pin. Minimize the loop
formed by the V CC bypass capacitors, bootstrap
diode, bootstrap capacitor, MAX5038/MAX5041,
and upper MOSFET gate.
8) Place the bank of output capacitors close to the load.
9) Distribute the power components evenly across the
board for proper heat dissipation.
10) Provide enough copper area at and around the
switching MOSFETs, inductor, and sense resistors
to aid in thermal dissipation.
11) Use at least 4oz copper to keep the trace induc-
tance and resistance to a minimum. Thin copper PC
boards can compromise efficiency since high cur-
rents are involved in the application. Also, thicker
copper conducts heat more effectively, thereby
reducing thermal impedance.
Chip Information
TRANSISTOR COUNT: 5431
PROCESS: BiCMOS
______________________________________________________________________________________
25
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| 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 |
| MAX5039EUA+T | 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 |
| MAX5039EUA-T | 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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