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参数资料
| 型号： | MAX15037ATE/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/25页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 16WQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 23 V |
| 输入电压： | 4.5 V ~ 23 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 312kHz ~ 2.1MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
2.2MHz, 3A Buck or Boost Converters
with an Integrated High-Side Switch
Inductor
Choose the minimum inductor value so the converter
remains in continuous mode operation at minimum out-
put current (I OUTMIN ).
Output Capacitor
For the boost converter, the output capacitor supplies
the load current when the main switch is on. The
required output capacitance is high, especially at high-
where
L MIN =
V 2 IN × D × η
2 × f SW × V OUT × I OUTMIN
er duty cycles. Also, the output capacitor ESR needs to
be low enough to minimize the voltage drop due to the
ESR while supporting the load current. Use the follow-
ing equation to calculate the output capacitor for a
specified output ripple tolerance.
D = OUT D IN
V + V ? V
V OUT + V D ? V DS
ESR =
Δ V ESR
I OUT
C OUT = OUT MAX
and I OUTMIN = 0.25 x I OUT .
The V D is the forward voltage drop of the external
Schottky diode, D is the duty cycle, and V DS is the volt-
age drop across the internal switch. Select the inductor
with low DC resistance and with a saturation current (I SAT )
rating higher than the peak switch current limit of 5.6A.
Input Capacitor
The input current for the boost converter is continuous
and the RMS ripple current at the input is low. Calculate
the capacitor value and ESR of the input capacitor
using the following equations.
I × D
Δ V Q × f SW
I OUT is the load current, Δ V Q is the portion of the ripple
due to the capacitor discharge, and Δ V ESR is the con-
tribution due to the ESR of the capacitor. D MAX is the
maximum duty cycle at minimum input voltage.
Power Dissipation
The MAX15036/MAX15037 are available in thermally
enhanced 16-pin, 5mm x 5mm TQFN packages that
dissipate up to 2.7W at T A = +70°C. When the die tem-
C IN =
Δ I P ? P × D
4 × f SW × Δ V Q
perature reaches +170°C, the MAX15036/MAX15037
shut down (see the Thermal-Overload Protection sec-
tion). The power dissipated in the device is the sum of
the power dissipated from supply current (P Q ), power
where
ESR =
Δ V ESR
Δ I P ? P
dissipated due to switching the internal power MOSFET
(P SW ), and the power dissipated due to the RMS cur-
rent through the internal power MOSFET (P MOSFET ).
The total power dissipated in the package must be lim-
ited so the junction temperature does not exceed its
Δ I P ? P =
( V IN ? V DROP ) × D
L × f SW
absolute maximum rating of +150°C at maximum ambi-
ent temperature.
The power dissipated in the switch is:
where V DROP is the total voltage drop across the inter-
P MOSFET = I RMS_MOSFET x R ON
? Δ I
P ? P × D
I RMS _ MOSFET = ( I OUT 2 × D ) + ?
?
??
nal MOSFET plus the voltage drop across the inductor
ESR. Δ I P-P is the peak-to-peak inductor ripple current
as calculated above. Δ V Q is the portion of input ripple
due to the capacitor discharge and Δ V ESR is the contri-
bution due to ESR of the capacitor.
For the buck converter:
? 12
2
?
?
Δ I P-P is the peak-to-peak inductor current ripple.
16
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| MAX15038ETG+T | 功能描述:直流/直流开关调节器 4A 2MHz Step-Down w/Integrated Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX15038EVKIT+ | 功能描述:电源管理IC开发工具 4A 2MHz Step-Down w/Integrated Switch 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 |
| MAX15039ETG+ | 功能描述:直流/直流开关调节器 6A 2MHz Step-Down w/Integrated Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX15039ETG+T | 功能描述:直流/直流开关调节器 6A 2MHz Step-Down w/Integrated Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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