DA9155M datasheet(10/38 Pages) RENESAS

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DA9155M

2.5 A Companion Charger for Rapid Charging

Datasheet

Revision 3.2

25-Feb-2022

CFR0011-120-00 Rev 5

10 of 37

Table 9: Buck Converter

Parameter

Symbol

Test conditions

Min

Typ

Max

Unit

Input voltage range

VIN

VIN has to be above VBAT

(Section 7.2)

4.3

13.5

Output current range

400

2500

Output current

IOUT

BUCK_IOUT = 0x32

750

BUCK_IOUT = 0x7D

1500

BUCK_IOUT = 0xE1

2500

Output current

regulation accuracy

IOUT_ACC

IOUT = 2.5 A,

≤ 80%,

VIN = 5V to 12V,

TA = 0 to 85 ºC (Note 2)

-5%

+5%

1.5 A

≤ IOUT < 2.5 A,

≤ 80%,

VIN = 5V to 12V,

TA = 25 ºC (Note 2)

-5%

+5%

500 mA

≤ IOUT < 1.5 A,

≤ 80%,

VIN = 5V to 12V,

TA = 25 ºC (Note 2)

-10%

+10%

Efficiency

VIN = 5 V

VBAT = 4.4 V

IOUT = 2.5 A

96%

VIN = 9 V

VBAT = 4.4 V

IOUT = 2.5 A

92%

VIN = 12 V

VBAT = 4.4 V

IOUT = 2.5 A

90%

Switching frequency

OSC_TUNE = 0x0

BUCK_FSW = 0x0 (Note 3)

1.2

MHz

OSC_TUNE = 0x0

BUCK_FSW = 0x2 (Note 3)

1.5

MHz

OSC_TUNE = 0x0

BUCK_FSW = 0x3 (Note 3)

MHz

Duty cycle

VIN

≥ 5 V, f=1.5 MHz

15%

85%

Switching frequency is

stepwise reduced above 85%

duty cycle

95%

Minimum off-time

tMIN_OFF

100

High-side RDSON

RDSON-HS

Including pin and routing

mΩ

Low-side RDSON

RDSON-LS

Including pin and routing

mΩ

Peak current limit

ILIM

BUCK_ILIM = 0x19

4400

5500

6600

BUCK_ILIM = 0x14

4000

5000

6000

BUCK_ILIM = 0x0

2050

3000

3820

Note 2

Accuracy may decrease by 5% at D > 80%

Note 3

1 MHz is recommended for VIN

≤ 6.5 V and 1.5 MHz for VIN > 6.5 V

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