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DRV590GQCR Datasheet

  • DRV590GQCR

  • 1.2-A HIGH-EFFICIENCY PWM POWER DRIVER

  • 16頁

  • TI

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DRV590
SLOS365A 鈥?AUGUST 2001 鈥?REVISED AUGUST 2002
1.2-A HIGH-EFFICIENCY PWM POWER DRIVER
FEATURES
D
1.22-A DC (82% Duty Cycle) Output Current
D
D
D
D
D
D
(T
J
鈮?/div>
89擄C)
1-A DC (100% Duty Cycle) Output Current
(T
J
鈮?/div>
89擄C)
Low Supply Voltage Operation from 2.7 V
to 5.5 V
High Efficiency Generates Less Heat
Over-Temperature Protection
Short-Circuit Protection
PowerPADt SOIC and 4
脳
4 mm MicroStar
Junior錚?Packages
DESCRIPTION
The DRV590 is a high-efficiency power amplifier ideal
for driving a wide variety of thermoelectric cooler
elements in systems powered from 2.7 V to 5.5 V. PWM
operation and low output stage on-resistance
significantly decrease power dissipation in the amplifier.
The DRV590 is internally protected against over
temperature conditions and current overloads due to
short circuits. The over temperature protection
activates at a junction temperature of 190擄C and will
deactivate once the temperature is less than 130擄C. If
the overcurrent circuitry is tripped, the amplifier will
automatically reset after 3鈥? ms.
The gain of the DRV590 is controlled by two input
terminals, GAIN1 and GAIN0. The amplifier may be
configured for a gain of 6, 12, 18, and 23.5 dB.
APPLICATIONS
D
Thermoelectric Cooler (TEC) Driver
D
Laser Diode Biasing
J5
IN鈥?(VCOM)
R1
1 k鈩?/div>
J1
R3
120 k鈩?/div>
J8
VDD
R4
120 k鈩?/div>
J2
R5
120 k鈩?/div>
J3
C3
1
碌F
R2
1 k鈩?/div>
J4
IN+
C4
1
碌F
NC
IN+
IN鈥?/div>
SHUTDOWN
GAIN0
GAIN1
PVDD
OUT+
NC
PGND
L1
10
碌H
NC
AREF
AGND
COSC
ROSC
VDD
PVDD
OUT鈥?/div>
NC
PGND
L2
10
碌H
C9
220 pF
R6
120 k鈩?/div>
J8
VDD
C1
1
碌F
C2
1
碌F
C8
10
碌F
J9
GND
C5
10
碌F
J7
OUT+
C6
10
碌F
C7
10
碌F
J6
OUT鈥?/div>
Typical Circuit Schematic for Driving a Thermoelectric Cooler Element
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD and MicroStar Junior are trademarks of Texas Instruments.
This document contains information on products in more than one phase
of development. The status of each device is indicated on the page(s)
specifying its electrical characteristics.
Copyright
錚?/div>
2002, Texas Instruments Incorporated
www.ti.com
1

DRV590GQCR 產(chǎn)品屬性

  • 1

  • 集成電路 (IC)

  • PMIC - 電源管理 - 專用

  • -

  • 熱電冷卻器

  • 4.5mA

  • 2.7 V ~ 5.5 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 48-VFBGA

  • 48-BGA MICROSTAR JUNIOR（4x4）

  • 剪切帶 (CT)

  • 296-18430-1

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