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ML9077 ML9078-00
瀏覽量：784 上傳更新：2020-07-13
ML9077 ML9078-00

Power-Saving Solar Power Supply Control LSIs
ML9077/ML9078-00

Automatically controls the power supplied to the microcontroller and peripheral components from the rechargeable battery (VBAT) as well as from the solar panels to the rechargeable battery based on the remaining charge (in the secondary battery).
Protection functions are built in, including charging stop with overcharge detection and malfunction prevention that prevents failures due to power supply stoppage caused by low voltage.
The result is significantly less peripheral circuitry compared with conventional products.
In addition, current consumption is less than 80nA (at 25°C).



Continuously monitors the voltage generated by the solar panel (VSC) and at the primary battery (VBAT) and selects the higher voltage for supply to the microcontroller and peripheral devices.
It protects the primary battery by preventing the flow of generated current from the solar panel. High voltage supply to the microcontroller is prevented by converting the generated voltage by the solar panel to low voltage.
In addition, protection functions are built in such as power supply selection monitoring, reducing peripheral circuitry significantly. Current consumption is less than 80nA (at 25°C)
*For some products the current consumption is less than 150nA (at 25°C)


Part No.

Part No.

Functions / Features

Operating
voltage
VBAT(V)

Operating
voltage
VSC(V)

VBAT Side
Current
consumption(A)

Operating
temperature
(°C)

VBAT-VDO
Output
impedance

VSC-VBAT
Input
impedance

OCP
voltage
overcharge
prevention
voltage
(V)

BOD
Low voltage
detection
voltage
(V)

ML9077

0.0 to 3.2

0.0 to 3.6

80n

–20 to +70

50mV/20mA
@VBAT≥1.8V

0.1V/1mA
@VSC≥2V

2.6 / 3.1

1.15 / 1.8


Part No.

Operating Conditions

Functions / Features

Operating
voltage
VBAT (V)

Operating
voltage
VSC(V)

VBAT Side
Current
consumption(A)

Operating
temperature
(°C)

VBAT-VDO
Output
impedance

VSC-VDO
Output
impedance

Regulator voltage
Solar limiter
voltage (V)

ML9078-001

1.1 to 3.6

0.0 to 4.0

80n

–20 to +70

150mV/2mA
@VBAT≥2V

130mV/2mA
@VBAT≥2V

3.3 / 1.65

ML9078-002

1.1 to 3.6

0.0 to 4.0

80n

–20 to +70

150mV/2mA
@VBAT≥2V

130mV/2mA
@VBAT≥2V

3.0 / 1.5

ML9078-003

1.1 to 3.6

0.0 to 4.0

150n

–20 to +70

150mV/2mA
@VBAT≥2V

130mV/2mA
@VBAT≥2V

VBAT

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