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TSZ02011-0Q4Q0AB00010-1-2

25.Feb.2014 Rev.001

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TSZ22111

・15・001

BD7602GUL

Block Explanation

The output voltage for LDO1 is 3V (Typ) with an output current capability of 100mA (Max). UVLO Function is released when

the IC starts by turning the power ON (VBAT).

LDO1 turns OFF when UVLO function is enabled.

I2C controller can also be used to turn off the IC. When LDO1 turns off, VOUT1 automatically connects with 100Ω

discharge resistance.

VOUT1 needs 4.7uF external capacitor.

LDO2 has an adjustable output voltage from 2.8V to 3.3V.The initial value is 3V (Typ) with an output current capability of

150mA (Max). UVLO Function is released when the IC starts by turning the power ON (VBAT).

LDO2 turns OFF when UVLO function is enabled.

I2C Controller is used to adjust output voltage from 2.8V to 3.3V (8steps). It is also used to turn off the IC.

When LDO2 turns off, VOUT2 automatically connects with 100Ω discharge resistance.

VOUT2 needs 4.7uF external capacitor.

GPO is a logic output pin from register and could be used as enable or disable signal. The register can also set its output to

CMOS type or NMOS type with an output current capability of 3mA.

Initial condition of GPO is disabled or in HI-Z state.

I2C SLAVE REGISTER is the function for I2C serial interface. Input voltage level is DVDD.

Voltage Detect for VBAT UVLO is 2.7V (Typ). When UVLO is detected, registers are reset.

Also at this time VREF, LDO1 and LDO2 outputs turn off.

VREF is equal to 2.5V (Typ). It powers the internal circuit and cannot be used externally. UVLO Function is released when

the IC starts by turning power ON (VBAT). When UVLO function is detected, IC turns off.

REFC needs 0.1uF external capacitor.

DPREF is reference voltage for LDO VREF and Voltage Detect.

TSD is for thermal shut down function. This prevents damaging and breaking of IC. When

IC„s internal temperature rise up

to a certain temperature, LDO1 and LDO2 are automatically turned off. When temperature goes down, LDO1 and LDO2

automatically return to its normal operation.

In this case, register

doesn‟t need to be reset.