参数资料
型号: MAX16974AUE/V+
厂商: Maxim Integrated Products
文件页数: 1/19页
文件大小: 0K
描述: IC REG BUCK SYNC 5V/ADJ 16TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 96
类型: 降压(降压)
输出类型: 两者兼有
输出数: 1
输出电压: 5V,1 V ~ 10 V
输入电压: 3.5 V ~ 28 V
PWM 型: 电流模式
频率 - 开关: 260kHz ~ 2.2MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 管件
供应商设备封装: 16-TSSOP-EP
EVALUA
AVAILAB
19-5630; Rev 1; 7/11
TION_KIT
LE
High-Voltage, 2.2MHz, 2A Automotive Step-
Down Converter with Low Operating Current
General Description
The MAX16974 is a 2A, current-mode, step-down con-
verter with an integrated high-side switch. It is designed
to operate with 3.5V to 28V input voltages, while using
only 35 F A quiescent current at no load. The switching
frequency is adjustable from 220kHz to 2.2MHz by an
external resistor and can be synchronized to an external
clock. The output voltage is pin selectable to be 5V fixed
or 1V to 10V adjustable. The wide input voltage range
makes the device ideal for automotive and industrial
applications.
The device operates in skip mode for reduced current
consumption in light-load applications. An adjustable
reset threshold helps keep microcontrollers alive down to
their lowest specified input voltage. Protection features
include cycle-by-cycle current limit, overvoltage, and
thermal shutdown with automatic recovery. The device
also features a power-good monitor to ease power-
supply sequencing.
The device operates over the -40 ° C to +125 ° C auto-
motive temperature range and is available in a 16-pin
TSSOP-EP package.
Features
S  Wide_3.5V_to_28V_Input_Voltage_Range
S  42V_Input_Transient_Tolerance
S  5V_Fixed_or_1V_to_10V_Adjustable_Output_Voltage
S  Integrated_2A_Internal_High-Side_Switch
S  Adjustable_Switching_Frequency_(220kHz_to_
2.2MHz)
S  Operates_Through_Cold_Crank_with_High_Duty_
Cycle
S  Frequency_Synchronization_Input
S  Internal_Boost_Diode
S  35μA_Skip-Mode_Operating_Current
S  5μA_Typical_Shutdown_Current
S  Adjustable_Power-Good_Output_Level_and_Timing
S  3.3V_Logic_Level_to_42V_Compatible_Enable_Input
S  Current-Limit,_Thermal-Shutdown,_and_
Overvoltage_Protections
S  Automotive_Temperature_Range:_-40°C_to_+125°C
S  AEC-Q100_Qualified
Ordering Information
Automotive
Industrial
Applications
PART TEMP_RANGE PIN-PACKAGE
MAX16974AUE/V+ -40 N C to +125 N C 16 TSSOP-EP*
/V Denotes an automotive qualified part.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Typical Application Circuit
V BAT
C IN1
47μF
C IN2
4.7μF
C IN3
0.1μF
EN
SUP
SUPSW
BST
C BST
0.1μF
C IN4
0.1μF
C IN5
4.7μF
L1
4.7μH
V OUT =
5V AT 2A
C COMP1
5600pF
R COMP
20k I
C COMP2
OPEN
R FOSC
12.1k I
FSYNC
COMP
FOSC
MAX16974
LX
OUT
RESETI
FB
V OU T
V BIA S
D1
V BIA S
R RES
10k I
C OUT
22μF
C BIAS
1μF
C CRES
100pF
BIAS
CRES
GND
RES
PLACE C IN2 (4.7μF) AND C IN3 (0.1μF) NEXT TO SUP.
PLACE C IN4 (0.1μF) AND C IN5 (4.7μF) NEXT TO SUPSW.
________________________________________________________________ _ Maxim Integrated Products _ _ 1
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.
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MAX16975AEE/V+ 功能描述:直流/直流开关转换器 28V 1A 2MHz Step Down 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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