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参数资料
| 型号： | MAX15015EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/26页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX15015 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 3.3V，5V |
| 电流 - 输出： | 1A，50mA |
| 输入电压： | 4.5 ~ 40 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX15015 |
1A, 4.5V to 40V Input Buck Converters with
50mA Auxiliary LDO Regulators
Detailed Description
The MAX15014–MAX15017 combine a voltage-mode
buck converter with an internal 0.5 ? power MOSFET
switch and a low-quiescent-current LDO regulator. The
buck converter of the MAX15015/MAX15016 has a
wide input voltage range of 4.5V to 40V. The
MAX15014/MAX15017’s input voltage range is 7.5V to
40V. Fixed switching frequencies of 135kHz and
500kHz are available. The internal low R DS_ON switch
allows for up to 1A of output current, and the output
voltage can be adjusted from 1.26V to 32V. External
compensation and voltage feed-forward simplify loop
compensation design and allow for a wide variety of L
and C filter components. All devices offer an automatic
switchover to pulse-skipping (PFM) mode, providing
low quiescent current and high efficiency at light loads.
Under no load, PFM mode operation reduces the cur-
rent consumption to 5.6mA for the MAX15014/
MAX15017 and 8.6mA for the MAX15015/MAX15016. In
shutdown (DC-DC and LDO regulator off), the supply
current falls to 6μA. Additional features include a pro-
grammable soft-start, cycle-by-cycle current limit,
hiccup-mode output short-circuit protection, and thermal
shutdown.
The LDO linear regulator operates from 5V to 40V and
delivers a guaranteed 50mA load current. The devices
feature a preset output voltage of 5.0V (MAX1501_A) or
3.3V (MAX1501_B). Alternatively, the output voltage
can be adjusted from 1.5V to 11V using an external
resistive divider. The LDO section also features a
RESET output with adjustable timeout period.
Enable Inputs and UVLO
The MAX15014–MAX15017 feature two logic inputs,
EN_SW (active-high) and EN_SYS (active-high) that can
be used to enable the switching power supply and the
LDO_OUT outputs. When V EN_SW is higher than the
threshold and EN_SYS is high, the switching power sup-
ply is enabled. When EN_SYS is high, the LDO is active.
When EN_SYS is low, the entire chip is off (see Table 1).
IN_SW
EN_SYS
IN_LDO
C-
C+
DVREG
DVREG
V INTOK
IN_LDO
-
7.0V OR 4.1V
V REFOK
V INT
4.1V
UVLO_SW
MAX15015/MAX15016
PASS ELEMENT
PCLK
LEVEL
SHIFT
LDO_OUT
REG
REG_LDO
V REF
+
+
VINT
V REFOK
V INTOK
UVLO_LDO
V INT
V INTOK
PREREG
ENABLE LDO
+
-
V REF
MUX
SET_LOD
EN_SW
VREG_OK
-
UVLO_SW
TSD
SHDN
V REG_EN
SHDN
V INT
V INT
V REF
I SS
V INT
REF
V REF
V REFOK
V INT
THERMAL
SHDN
TSD
UVLO_LDO
TSD
SHDN
0.925 x V REF
EN
-
+
V INT
2 μ A
V INT
OUT_LDO
-
+
DELAY COMPARATOR
185mV
RESET
CT
SS
+
+
VREG_ OK
+
DRAIN
FB
E/A
-
SSA
-
V REF
-
REF_ILIM
PFM
+
HIGH-SIDE
CURRENT
SENSE
OVERLOAD
-
REF_PFM
COMP
MANAGEMENT
CLK
BST
OVERL
IN S/W
-
LX
SYNC
EN
OSC
RAMP
-
0.3V
+
CPWM
+
PFM
LOGIC
SCLK
DVREG
SGND
CLK
PCLK
PGND
Figure 1. MAX15015/MAX15016 Simplified Block Diagram
14
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相关代理商/技术参数 |
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| MAX15016AATX+ | 功能描述:直流/直流开关转换器 1A 4.5-40V Input Buck Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15016AATX+T | 功能描述:直流/直流开关转换器 1A 4.5-40V Input Buck Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15016BATX+ | 功能描述:直流/直流开关转换器 1A 4.5-40V Input Buck Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15016BATX+T | 功能描述:直流/直流开关转换器 1A 4.5-40V Input Buck Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15017AATX+ | 功能描述:直流/直流开关转换器 1A 4.5-40V Input Buck Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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