Datasheet > RTQ2131B-QA

RTQ2131B-QA

更新时间： 2024-01-08 12:57:20

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
28页	421K
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技术参数
数据手册

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RTQ2131B-QA 技术参数

Status：	Active	Vin (min) (V)：	3
Vin (max) (V)：	36	Number of Outputs：	1
Vout (min) (V)：	0.8	Vout (max) (V)：	28
Preset Vout (V)：		Output Adj. Method：	Fixed;Resistor
Iout (max) (A)：	1	Current Limit (typ) (A)：	1.6
Freq (typ) (kHz)：	2100	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	200	Ron_LS (typ) (mOhm)：	160
Iq (typ) (mA)：	1.1	Features：	AEC-Q100 Qualified;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Force PWM;OCP;Power Good;UVP
Package Type：	WDFN3x3-10S

RTQ2131B-QA 数据手册

RTQ2131B-QA

voltage protection with hiccup mode.During hiccup mode,

the device remains shut down. After a period of time, a

soft-start sequence for auto-recovery will be initiated. Upon

completion of the soft-start sequence, if the fault condition

is removed, the converter will resume normal operation;

otherwise, such cycle for auto-recovery will be repeated

until the fault condition is cleared. Hiccup mode allows

the circuit to operate safely with low input current and

power dissipation, and then resume normal operation as

soon as the over-load or short-circuit condition is removed.

Ashort circuit protection and recovery profile is shown in

Figure 3.

Short

Removed

Output Short

V_OUT

2V/DIV

V_PGOOD

4V/DIV

I_SW

1A/DIV

Figure 3. Short Circuit Protection and Recovery

Over-Temperature Protection

The RTQ2131B includes an over temperature protection

(OTP) circuitry to prevent overheating due to excessive

power dissipation. The OTP will shut down switching

operation when junction temperature exceeds a thermal

shutdown threshold T_SD. Once the junction temperature

cools down by a thermal shutdown hysteresis (ΔT_SD), the

IC will resume normal operation with a complete soft-start.

Pin-Short Protection

The RTQ2131B provides pin-short protection for neighbor

pins. The internal protection fuse will be burned out to

prevent IC smoke, fire and spark when BOOT pin is

shorted to VIN pin. The hiccup mode protection will be

triggered to avoid IC burn-out when SW pin is shorted to

ground during internal high-side MOSFET turns on.

is a registered trademark of Richtek Technology Corporation.

DSQ2131B-QA-01 August 2018

www.richtek.com

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