LB1939T 查看數據表（PDF） - SANYO -> Panasonic

零件编号

产品描述 (功能)

生产厂家

LB1939T

2 Channel H Bridge Constant Voltage/Constant Current Driver IC

SANYO -> Panasonic 

Application Circuit Example 1

LB1939T

CPU

VDD VS2 VS1

ENA1

ENA2

IN1

IN2

S-GND

LB1939T

OUT1

OUT2

OUT3

OUT4

SVDD

Vref VC1 VC2 RFG1 RFG2

Constant voltage control mode: OUT outputs a 1.75 V, which is Vref (0.9 V) × 1.95.

* : FC1 and FC2 are left open.

Application Circuit Example 2

CPU

VDD VS2 VS1

ENA1

ENA2

IN1

IN2

LB1939T

OUT1

OUT2

OUT3

OUT4

S-GND

FC1

SVDD

FC2

Vref VC1 VC2 RFG1 RFG2

Constant current control mode: The RFG voltage is controlled so that Vref/4.5 = 0.2 V.

Therefore, when RfB is 1 Ω, the circuit operates in constant current drive with Icoil = 0.2 V/1 Ω = 200 mA.

*: There are no magnitude constraints on the inputs (ENA, IN) and the supply voltages (VDD, VS).

For example, the IC can be operated at VIN = 5 V, VDD = 3 V, and VS = 2 V.

No. 6194-5/7

Share Link: