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| 型号： | MAX15020ATP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.5 V ~ 36 V |
| 输入电压： | 7.5 V ~ 40 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 300kHz ~ 500kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
ATION
AILABL
19-0811; Rev 1; 5/11
KIT
EVALU E
AV
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
General Description
The MAX15020 high-voltage step-down DC-DC con-
verter operates over an input voltage range of 7.5V to
40V. The device integrates a 0.2 Ω high-side switch and
is capable of delivering 2A load current with excellent
load and line regulation. The output is dynamically
adjustable from 0.5V to 36V through the use of an exter-
nal reference input (REFIN). The MAX15020 consumes
only 6μA in shutdown mode.
The device utilizes feed-forward voltage-mode architec-
ture for good noise immunity in the high-voltage switch-
ing environment and offers external compensation for
maximum flexibility. The switching frequency is selec-
table to 300kHz or 500kHz and can be synchronized to
an external clock signal of 100kHz to 500kHz by using
the SYNC input. The IC features a maximum duty cycle
of 95% (typ) at 300kHz.
The device includes configurable undervoltage lockout
(UVLO) and soft-start. Protection features include
cycle-by-cycle current limit, hiccup-mode for output
short-circuit protection, and thermal shutdown. The
MAX15020 is available in a 20-pin TQFN 5mm x 5mm
package and is rated for operation over the
Features
? Wide 7.5V to 40V Input Voltage Range
? 2A Output Current, Up to 96% Efficiency
? Dynamic Programmable Output Voltage (0.5V to
36V)
? Maximum Duty Cycle of 95% (typ) at 300kHz
? 100kHz to 500kHz Synchronizable SYNC
Frequency Range
? Configurable UVLO and Soft-Start
? Low-Noise, Voltage-Mode Step-Down Converter
? Programmable Output-Voltage Slew Rate
? Lossless Constant Current Limit with Fixed
Timeout to Hiccup Mode
? Extremely Low-Power Consumption (< 6μA typ) in
Shutdown Mode
? 20-Pin (5mm x 5mm) Thin QFN Package
Ordering Information
-40°C to +125°C temperature range.
Applications
PART
MAX15020ATP+
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
20 TQFN-EP*
Printer Head Driver Power Supply
Automotive Power Supply
Industrial Power Supply
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
Step-Down Power Supply
Typical Operating Circuit
V IN
(7.5V TO 40V)
ON/OFF
IN
REG
DVREG
BST
V OUT
(0.5V TO 36V)
LX
REFOUT
MAX15020
FB
PWM
INPUT
REFIN
EP
SS
SYNC GND FSEL PGND COMP
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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