参数资料
型号: MAX16955AUE/V+
厂商: Maxim Integrated Products
文件页数: 1/26页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16TSSOP
其它有关文件: Automotive Product Guide
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 96
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
电源电压: 3.5 V ~ 36 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 管件
EVALUATION KIT AVAILABLE
MAX16955
36V, 1MHz Step-Down Controller
with Low Operating Current
General Description
Features
The MAX16955 is a current-mode, synchronous PWM
step-down controller designed to operate with input volt-
ages from 3.5V to 36V while using only 50μA of quies-
cent current at no load. The switching frequency is
adjustable from 220kHz to 1MHz by an external resistor
and can be synchronized to an external clock up to
1.1MHz. The MAX16955 output voltage is pin program-
mable to be either 5V fixed, or adjustable from 1V to
10V. The wide input voltage range, along with its ability
to operate in dropout during undervoltage transients,
makes it ideal for automotive and industrial applications.
The MAX16955 operates in fixed-frequency PWM mode
and low quiescent current skip mode. It features an
enable logic input, which is compatible up to 42V to
disable the device and reduce its shutdown current to
10 μA. Protection features include overcurrent limit,
overvoltage, undervoltage, and thermal shutdown with
automatic recovery. The device also features a power-
good monitor to ease power-supply sequencing.
The MAX16955 is available in a thermally enhanced 16-
pin TSSOP package with exposed pad and is specified
for operation over the -40°C to +125°C automotive tem-
perature range.
Applications
o
o
o
o
o
o
o
o
o
o
o
o
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Wide 3.5V to 36V Input Voltage Range
42V Input Transient Tolerance
High Duty Cycle During Undervoltage Transients
220kHz to 1MHz Adjustable Switching Frequency
Current-Mode Control Architecture
Adjustable (1V to 10V) Output Voltage with ±2%
Accuracy
Three Operating Modes
50μA Ultra-Low Quiescent Current Skip Mode
Forced Fixed-Frequency Mode
External Frequency Synchronization
Lowest BOM Count, Current-Mode Control
Architecture
Power-Good Output
Enable Input Compatible from 3.3V Logic Level to
42V
Current-Limit, Thermal Shutdown, and
Overvoltage Protection
-40°C to +125°C Automotive Temperature Range
Automotive Qualified
Typical Operating Circuit
Automotive
Industrial
V BAT
C IN
SUP
DH
C BST
NH
Military
COMP
BST
L
Point of Load
Ordering Information
R COMP
C COMP1
C COMP2
MAX16955
LX
PART
MAX16955AUE+
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
16 TSSOP-EP*
PGOOD
EN
DL
PGND
NL
R SENSE
MAX16955AUE/V+ -40°C to +125°C 16 TSSOP-EP*
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
R FOSC
FSYNC
FOSC
SGND
CS
OUT
FB
BIAS
C OUT
V OUT
5V
*EP = Exposed pad.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
C L
19-5781; Rev 3; 12/13
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