Datasheet > AAT3216IJS-2.3-T1

AAT3216IJS-2.3-T1

更新时间： 2024-02-10 18:27:00

品牌	Logo	应用领域
ANALOGICTECH		/
页数	文件大小	规格书
16页	180K
描述
150mA MicroPower⑩ LDO with PowerOK

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AAT3216IJS-2.3-T1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.84	湿度敏感等级：	1
Base Number Matches：	1

AAT3216IJS-2.3-T1 数据手册

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AAT3216

150mA MicroPower™ LDO with PowerOK

LDO regulator to withstand indefinite short-circuit

conditions without sustaining permanent damage.

POK Output

The AAT3216 features an integrated Power-OK

comparator which can be used as an error flag.

The POK open-drain output goes low when OUT is

6% below its nominal regulation voltage. Connect

a pull-up resistor from POK to OUT or IN.

delayed POK signal can be implemented with a

capacitor in parallel with the pull-up resistor.

No-Load Stability

The AAT3216 is designed to maintain output volt-

age regulation and stability under operational no-

load conditions. This is an important characteristic

for applications where the output current may drop

to zero.

Enable Function

The AAT3216 features an LDO regulator enable/

disable function. This pin (EN) is active high and is

compatible with CMOS logic. To assure the LDO

regulator will switch on, the EN turn-on control level

must be greater than 2.0V. The LDO regulator will

go into the disable shutdown mode when the volt-

age on the EN pin falls below 0.6V. If the enable

function is not needed in a specific application, it

may be tied to V_INto keep the LDO regulator in a

continuously on state.

Reverse Output-to-Input Voltage

Conditions and Protection

Under normal operating conditions, a parasitic

diode exists between the output and input of the

LDO regulator. The input voltage should always

remain greater than the output load voltage, main-

taining a reverse bias on the internal parasitic

diode. Conditions where V_OUTmight exceed V_IN

should be avoided since this would forward bias

the internal parasitic diode and allow excessive

current flow into the V_OUTpin, possibly damaging

the LDO regulator.

When the LDO regulator is in the shutdown mode,

an internal 1.5kΩ resistor is connected between

V_OUTand GND. This is intended to discharge C_OUT

when the LDO regulator is disabled. The internal

1.5kΩ has no adverse effect on device turn-on time.

In applications where there is a possibility of V_OUT

exceeding V_INfor brief amounts of time during nor-

mal operation, the use of a larger value C_INcapaci-

tor is highly recommended. A larger value of C_IN

with respect to C_OUTwill effect a slower C_INdecay

rate during shutdown, thus preventing V_OUTfrom

exceeding V_IN. In applications where there is a

greater danger of V_OUTexceeding V_INfor extended

periods of time, it is recommended to place a

Schottky diode across V_INto V_OUT(connecting the

cathode to V_INand anode to V_OUT). The Schottky

diode forward voltage should be less than 0.45V.

Short-Circuit Protection

The AAT3216 contains an internal short-circuit pro-

tection circuit that will trigger when the output load

current exceeds the internal threshold limit. Under

short-circuit conditions, the output of the LDO reg-

ulator will be current limited until the short-circuit

condition is removed from the output or LDO regu-

lator package power dissipation exceeds the

device thermal limit.

Thermal Considerations and High

Output Current Applications

The AAT3216 is designed to deliver a continuous

output load current of 150mA under normal operat-

ing conditions.

Thermal Protection

The AAT3216 has an internal thermal protection cir-

cuit which will turn on when the device die temper-

ature exceeds 150°C. The internal thermal protec-

tion circuit will actively turn off the LDO regulator

output pass device to prevent the possibility of over-

temperature damage. The LDO regulator output

will remain in a shutdown state until the internal die

temperature falls back below the 150°C trip point.

The limiting characteristic for the maximum output

load current safe operating area is essentially

package power dissipation and the internal preset

thermal limit of the device. In order to obtain high

operating currents, careful device layout and circuit

operating conditions must be taken into account.

The combination and interaction between the short-

circuit and thermal protection systems allows the

3216.2006.01.1.3

1...7 8 91011 12 13...16

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与AAT3216IJS-2.3-T1相关器件

型号	品牌	获取价格	描述	数据表
AAT3216IJS-2.5-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-2.7-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-2.85-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-2.8-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-3.0-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-3.3-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3216IJS-3.5-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ LDO with PowerOK
AAT3218	ANALOGICTECH	获取价格	150mA MicroPower⑩ High Performance LDO
AAT3218IGV-1.2-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ High Performance LDO
AAT3218IGV-1.5-T1	ANALOGICTECH	获取价格	150mA MicroPower⑩ High Performance LDO

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