DIO5907x

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© 2026 Dioo Microcircuits Co., Ltd. Jiangsu

DIO5907x• Rev.1.6

- 5 -

TMR

I

Timer Programming Input. TMR controls the pre-charge and fast-charge safety timers.

Connect TMR to VSS to disable all safety timers. Connect a 18 kΩ to 72 kΩ resistor

between TMR and VSS to program the timers a desired length. Leave TMR

unconnected to set the timers to the default values.

TD

I

Termination Disable Input. Connect TD high to disable charger termination. Connect TD

to VSS to enable charger termination. TD is internally pulled down to VSS with

approximately 270 kΩ. Do not leave TD unconnected to ensure proper operation.

(DIO59073/73B).

ITERM

I

Termination Current Programming Input. Connect a resistor from ITERM to VSS to

program the termination current. (DIO59078 only).

SYSOFF

I

System Enable Input. Connect SYSOFF high to turn off the FET connecting the battery

to the system output. When an adapter is connected, charging is also disabled. Connect

SYSOFF low for normal operation. SYSOFF is internally pulled up to VBAT through a

large resistor (approximately 7 MΩ). Do not leave SYSOFF unconnected to ensure

proper operation. (DIO59075/76).

ISET

I/O

Fast Charge Current Programming Input. Connect a 590 Ω to 8.9 kΩ resistor from ISET

to VSS to program the fast charge current level. Charging is disabled if ISET is left

unconnected. While charging, the voltage at ISET reflects the actual charging current

and can be used to monitor charge current.

EP

-

Not internally connect to GND. Recommend to connect to a large ground plane for

improved thermal performance.

Table 1. EN1 / EN2 Settings

EN2

EN1

Maximum Input Current Into IN Pin

0

0

100 mA. USB100 mode

0

1

500 mA. USB500 mode

1

0

Set by an external resistor from ILIM to VSS

1

1

Standby (USB suspend mode)