Datasheet > AL8862Q

AL8862Q

更新时间： 2023-12-06 20:08:34

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
17页	1628K
描述
AUTOMOTIVE GRADE 55V 1A STEP-DOWN CONVERTER

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AL8862Q 数据手册

AL8862Q

Thermal Information(Note 6)

Symbol

Parameter

Rating

Unit

°C/W

SO-8EP

Junction-to-Ambient Thermal Resistance

θ_JA

θ_JC

V-DFN3030-8/SWP (Type A)

68.4

6.5

SO-8EP

Junction-to-Case (Top) Thermal Resistance

V-DFN3030-8/SWP (Type A)

16.7

Note:

6. Device mounted on 2″ × 2″ FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout.

Electrical Characteristics (@T_A= -40°C to +125°C, V_IN= 16V, typical values are at T_A= +25°C, unless otherwise noted.)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

SUPPLY VOLTAGE

Input Voltage

Quiescent Current

—

5.0

—

µA

V_IN

I_Q

450

4.8

200

CTRL Pin Floating, V_IN= 16V

Undervoltage Lockout

UVLO Hysteresis

V_UVLO

V_{UVLO_HYS}

V_INRising

—

HYSTERESTIC CONTROL

Measured on SET Pin with

Respect to VIN

Mean Current Sense Threshold Voltage

100

104

V_SET

Sense Threshold Hysteresis

SET Pin Input Current

—

±13

—

V_{SET_HYS}

I_SET

µA

V_SET= V_IN-0.1

Internal Resistor between VIN Pin and

SET Pin

—

500

—

R_{SET_INT}

ENABLE AND DIMMING

Voltage Range on CTRL Pin

For Analog Dimming

0.4

—

2.5

V_CTRL

—

Analog Dimming Range

—

100

DC Voltage on CTRL Pin for Analog

Dimming On

DC Voltage on CTRL Pin for Analog

Dimming Off

—

0.45

0.40

—

V_{CTRL_ON}

V_{CTRL_OFF}

V_CTRLRising

V_CTRLFalling

SWITCHING OPERATION

SW Switch On Resistance

—

0.4

—

R_ON

I_{SW_LEAK}

t_SS

@I_SW= 100mA

SW Switch Leakage Current

Soft-Start Time

μA

V_SW= 65V, Other Pins Floating

V_IN= 16V, C_CTRL= 1nF

1.5

—

V_IN= 16V, V_O= 9.6V (3 LEDs)

L = 47μH, ΔI = 0.25A (I_LED= 1A)

Operating Frequency

—

250

—

kHz

MHz

f_SW

Recommended Maximum Switch

Frequency

Recommended Minimum Switch On

Time

—

f_{SW_MAX}

t_{ON_REC}

For 4% Accuracy

500

—

Delay Time from Triggering of

Current Sense Threshold to SW

On/Off

Internal Comparator Propagation Delay

(Note 7)

—

100

—

t_PD

THERMAL SHUTDOWN

Overtemperature Protection

—

+150

+30

—

°C

T_OTP

Temperature Protection Hysteresis

Current Limit

—

T_{OTP_HYS}

I_{SW_MAX}

Peak Inductor Current

Note:

7. Guaranteed by design.

4 of 17

www.diodes.com

July 2023

AL8862Q

Document number: DS42199 Rev. 5 - 2

1 2 345 6 7...17

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