M61040 查看數據表（PDF） - MITSUBISHI ELECTRIC

零件编号

产品描述 (功能)

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M61040

Smart battery protection and monitoring IC

MITSUBISHI ELECTRIC  

Smart battery protection and monitoring IC

M61040FP

(3) Over current detection circuit

The over current detection circuit is shown in Figure 8. This circuit is composed of comparator, reference

voltage and delay circuit.

It can be got high accuracy over current detection by adjusting detection voltage with sense resistor.

Microcomputer can detect the over current status through monitoring “CIN_1”pin.

Besides this block contains load-short detection circuit. This circuit detects load-short with VIN_12 pin and

protects faster than over current detection.

VIN 12

DF OUT

To Microcomputer

CIN

Delay

circuit

−

+

V ref1

VIN 11

VIN 10

Rsense

Battery

(4) Voltage regulator and

reference voltage

Figure 8.Over current detection circuit

VCC

Voltage regulator and reference circuit are

shown in Figure 9. Pch MOS transistor is

used for output driver.

The output voltage can be adjusted by

VREF1

−

+

M61040 itself. So the external resistor is not

required.

NOTE:

There is a diode put between Vcc and

Vreg terminal to prevent the invert current

from damaging this IC when Vcc voltage is

higher than Vreg voltage. So please always

M1

ON/OFF

VREF2

R1

−

R2

+

Vreg

M1

ON/OFF

R3 Vref

R4

Serial to Parallel conversion circuit

keep Vreg voltage lower than Vcc+0.3V.

Set a condenser on output to suppress input

Figure 9 Voltage regulator circuit

changes or load changes.

Mitsubishi Electric

(14/25)

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