UC2637L

更新时间： 2024-11-27 03:57:23

品牌	Logo	应用领域
德州仪器 - TI		开关电机驱动控制器
页数	文件大小	规格书
9页	357K
描述
Switched Mode Controller for DC Motor Drive

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UC2637L 数据手册

UC1637

UC2637

UC3637

Switched Mode Controller for DC Motor Drive

FEATURES

DESCRIPTION

•

Single or Dual Supply

Operation

The UC1637 is a pulse width modulator circuit intended to be used for a variety of

PWM motor drive and amplifier applications requiring either uni-directional or bi-

directional drive circuits. When used to replace conventional drivers, this circuit

can increase efficiency and reduce component costs for many applications. All

necessary circuitry is included to generate an analog error signal and modulate

two bi-directional pulse train outputs in proportion to the error signal magnitude

and polarity.

2.5V to 20V Input Supply

Range

5% Initial Oscillator

Accuracy; 10% Over

Temperature

This monolithic device contains a sawtooth oscillator, error amplifier, and two

•

Pulse-by-Pulse Current

Limiting

PWM comparators with 100mA output stages as standard features. Protection

circuitry includes under-voltage lockout, pulse-by-pulse current limiting, and a

shutdown port with a 2.5V temperature compensated threshold.

•

Under-Voltage Lockout

The UC1637 is characterized for operation over the full military temperature range

of -55°C to +125°C, while the UC2637 and UC3637 are characterized for -25°C to

+85°C and 0°C to +70°C, respectively.

Shutdown Input with

Temperature Compensated

2.5V Threshold

•

Uncommitted PWM

Comparators for Design

Flexibility

ABSOLUTE MAXIMUM RATINGS (Note 1)

Supply Voltage ( Vs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V

Output Current, Source/Sink (Pins 4, 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA

Analog Inputs (Pins 1, 2, 3, 8, 9, 10, 11 12, 13, 14, 15, 16) . . . . . . . . . . . . . . . . . . . . . . . Vs

Error Amplifier Output Current (Pin 17) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA

Dual 100mA, Source/Sink

Output Drivers

Oscillator Charging Current (Pin 18). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2mA

Power Dissipation at TA = 25°C (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mW

Power Dissipation at TC = 25°C (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000mW

Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C

Lead Temperature (Soldering, 10 Seconds). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C

Note 1: Currents are positive into, negative out of the specified terminal.

Note 2: Consult Packaging Section of Databook for thermal limitations and considerations

of package.

BLOCK DIAGRAM

6/97

12 3 4 5 6 7...9

中文翻译

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与UC2637L相关器件

型号	品牌	获取价格	描述	数据表
UC2637-MIL	TI	获取价格	Switched Mode Controller for DC Motor Drive
UC2637N	TI	获取价格	Switched Mode Controller for DC Motor Drive
UC2637NG4	TI	获取价格	Switched Mode Controller for DC Motor Drive
UC2637Q	TI	获取价格	Switched Mode Controller for DC Motor Drive
UC2637QG3	TI	获取价格	BRUSH DC MOTOR CONTROLLER, 0.5A, PQCC20, GREEN, PLASTIC, LCC-20
UC2637QTR	TI	获取价格	Switched Mode Controller for DC Motor Drive
UC2637QTRG3	TI	获取价格	BRUSH DC MOTOR CONTROLLER, 0.5A, PQCC20, GREEN, PLASTIC, LCC-20
UC2638	TI	获取价格	Advanced PWM Motor Controller
UC2638DW	TI	获取价格	Advanced PWM Motor Controller
UC2638DWG4	TI	获取价格	Advanced PWM Motor Controller

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