Datasheet > MAX6475UT28AD2

MAX6475UT28AD2

更新时间： 2024-02-13 06:43:12

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理光电二极管
页数	文件大小	规格书
24页	491K
描述
Fixed/Adjustable Positive LDO Regulator, 1.229V Min, 5V Max, 0.21V Dropout, BICMOS, PDSO6, MO-178AB, SOT-23, 6 PIN

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MAX6475UT28AD2 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SOT-23
包装说明：	SOT-23, 6 PIN	针数：	6
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.34
Is Samacsys：	N	可调性：	FIXED
最大回动电压 1：	0.21 V	标称回动电压 1：	0.137 V
最大绝对输入电压：	7 V	JESD-30 代码：	R-PDSO-G6
JESD-609代码：	e0	长度：	2.9 mm
湿度敏感等级：	1	功能数量：	1
输出次数：	1	端子数量：	6
工作温度TJ-Max：	150 °C	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流 1：	0.3 A
最大输出电压 1：	5 V	最小输出电压 1：	1.229 V
标称输出电压 1：	2.8 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	LSSOP	封装等效代码：	TSOP6,.11,37
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
包装方法：	TAPE AND REEL	峰值回流温度（摄氏度）：	245
认证状态：	Not Qualified	调节器类型：	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：	1.45 mm	子类别：	Other Regulators
表面贴装：	YES	技术：	BICMOS
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.95 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	最大电压容差：	2.7%
宽度：	1.625 mm	Base Number Matches：	1

MAX6475UT28AD2 数据手册

300mA LDO Linear Regulators with Internal

Microprocessor Reset Circuit

Detailed Description

The MAX6469–MAX6484 are ultra-low, quiescent cur-

2.5V TO 5.5V

rent, low-dropout linear regulators with an integrated

microprocessor reset circuit. These devices guarantee

300mA (min) drive capabilities and are available with

preset output voltages in 100mV increments between

+1.5V and +3.3V. The internal reset circuit monitors the

regulator output voltage and asserts the reset output

when the regulator output is below the microprocessor

supply tolerance.

OUT

MAX6469–MAX6472

MAX6477–MAX6480

(MR)

SET

OUT

MANUAL

RESET

GND

Regulator

The regulator core operates with +2.5V to +5.5V input

voltage range. The output voltage is offered in 100mV

increments between +1.5V and +3.3V (contact factory

for other output voltage options). The MAX6469–

MAX6472/MAX6477–MAX6480 offer an adjustable out-

put voltage implemented with an external resistor-

divider network between OUT, SET, and GND (Figure

1). SET must be connected to either GND for fixed

( ) ARE FOR MAX6471/MAX6472/MAX6479/MAX6480 ONLY

Figure 1. Adjustable Output Voltage Configuration

the reset threshold. RESET asserts when MR is pulled

low (MAX6471–MAX6474/MAX6479–MAX6482). RESET

asserts when SHDN is pulled low (MAX6469/

MAX6470/MAX6473–MAX6478/MAX6481–MAX6484).

or to an external divider for adjustable V

. The

OUT

Shutdown

(MAX6469/MAX6470/MAX6473–MAX6478/MAX6481–

MAX6484 only)

MAX6469–MAX6472/MAX6477–MAX6480 automatically

determine the feedback path depending on the con-

nection of SET. The Typical Operating Circuit shows a

typical connection for the MAX6469. OUT is an internal-

ly regulated low-dropout (LDO) linear regulator that

powers a microprocessor.

SHDN allows the regulator to shut down, thereby reduc-

ing the total I consumption of the device. SHDN pro-

vides a digitally controlled active-low shutdown. In

shutdown mode, the pass transistor, control circuit, and

reference turn off to reduce the supply current to below

0.1µA. Connect SHDN to IN for normal operation.

Reset Circuit

The reset supervisor circuit is fully integrated in the

MAX6469–MAX6484 and uses the same reference volt-

age as the regulator. Two supply tolerance reset

thresholds, -7.5% and -12.5%, are provided for each

type of device.

Manual Reset Input

(MAX6471–MAX6474/MAX6479–MAX6482 only)

Many µP-based products require manual reset capabil-

ity, allowing the operator, a test technician, or external

logic circuitry to initiate a reset. A logic low on MR

asserts reset while the regulator output voltage is still

within tolerance.

-7.5% Reset: Reset does not assert until the regulator

output voltage is at least -5% out of tolerance and

always asserts before the regulator output voltage is

-10% out of tolerance.

Reset remains asserted while MR is low and for the

-12.5% Reset: Reset does not assert until the regulator

output voltage is at least -10% out of tolerance and

always asserts before the regulator output voltage is

-15% out of tolerance.

reset timeout period (t ) after MR returns high. The

MR input has an internal pullup of 40kΩ (typ) to OUT.

MR can be driven with TTL/CMOS logic levels or with

open-drain/collector outputs. Connect a normally open

switch from MR to GND to create a manual reset func-

tion; external debounce circuitry is not required. If MR

is driven from long cables or the device is used in a

noisy environment, connect a 0.1µF capacitor from MR

to GND to provide additional noise immunity.

RESET Output

A µP’s reset input starts the µP in a known state. The

MAX6469–MAX6484 µP supervisory circuits assert

RESET during power-up, power-down, and brownout

conditions. RESET asserts when the input voltage is

below the undervoltage lockout threshold. RESET

Feedback Input

(MAX6475/MAX6476/MAX6483/MAX6484 only)

asserts when V

is below the reset threshold and

OUT

remains asserted for at least the minimum selected reset

timeout period (t , Table 3) after V rises above the

The feedback input (FB) connects to an internal resistor-

divider network (Functional Diagram). FB is not internally

OUT

undervoltage lockout threshold and V

rises above

connected to V

, and as a result can be used to

OUT

_______________________________________________________________________________________

1...6 7 8910 11 12...24

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与MAX6475UT28AD2相关器件

型号	品牌	描述	获取价格	数据表
MAX6475UT28AD2-T	MAXIM	300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit	获取价格
MAX6475UT28AD3	MAXIM	300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit	获取价格
MAX6475UT28AD3-T	MAXIM	300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit	获取价格
MAX6475UT28AD4	MAXIM	Fixed/Adjustable Positive LDO Regulator, 1.229V Min, 5V Max, 0.21V Dropout, BICMOS, PDSO6,	获取价格
MAX6475UT28AD4-T	MAXIM	300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit	获取价格
MAX6475UT28BD1-T	MAXIM	300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit	获取价格

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