A3969 Ver la hoja de datos (PDF) - Allegro MicroSystems

Número de pieza

componentes Descripción

Fabricante

A3969

Dual Full-Bridge PWM Motor Driver

Allegro MicroSystems 

A3969

Dual Full-Bridge PWM Motor Driver

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 3.0 V to 3.6 V, VREF = 1.7 V,

VS = 0 V, 56 kΩ and 680 pF RC to Ground (unless noted otherwise) (cont.)

Characteristic

Control Logic (continued)

Symbol Test Conditions

Min.

Limits

Typ. Max.

Units

PWM RC Frequency

PWM Propagation Delay Time

Cross-Over Dead Time

Propagation Delay Times

Thermal Shutdown Temp.

Thermal Shutdown Hysteresis

UVLO Enable Threshold

UVLO Hysteresis

Logic Supply Current

fosc

tPWM

CT = 680 pF, RT = 56 kΩ

Comparator Trip to Source OFF

Cycle Reset to Source ON

22.9 25.4

27.9

kHz

—

1.0

1.4

μs

—

0.8

1.2

μs

tcodt

100 Ω Load to 15 V

0.2

1.3

3.0

μs

tpd

IOUT = ±650 mA, 50% to 50%; VBB = 15 V:

ENABLE ON to Source ON

—

125

—

ns

ENABLE OFF to Source OFF

—

500

—

ns

ENABLE ON to Sink ON

—

200

—

ns

ENABLE OFF to Sink OFF

—

200

—

ns

PHASE Change to Sink ON

—

1500

—

ns

PHASE Change to Sink OFF

—

200

—

ns

PHASE Change to Source ON

—

1500

—

ns

PHASE Change to Source OFF

—

200

—

ns

TJ

ΔTJ

VT(UVLO)+

VT(UVLO)hys

ICC(ON)

ICC(OFF)

Increasing VCC

VENABLE 1 = VENABLE 2 = 0.8 V

VENABLE 1 = VENABLE 2 = 2.4 V

—

165

—

°C

—

15

—

°C

—

2.75

3.0

V

0.07 0.10

—

V

—

—

50

mA

—

—

9.0

mA

NOTES:

1. Typical Data is for design information only.

2. Negative current is defined as coming out of (sourcing) the specified device terminal.

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

Share Link: