MC34675 datasheet(5/24 Pages) FREESCALE

Part #	MC34675

Description	28V-Input-Voltage Single-Cell Li-Ion Battery Charger with 10mA Regulator

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Analog Integrated Circuit Device Data

Freescale Semiconductor

5

34675

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics

Characteristics noted under conditions VIN = 5V, -40°C ≤ TA ≤ 85°C, CIN = 1.0μF, COUT = 2.2μF, CDET = 0.22μF (see Figure 1),

unless otherwise noted. Typical values noted reflect the approximate parameter means at VIN = 5V and TA = 25°C under nominal

conditions, unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

POWER INPUT

VIN Pin Normal Operation Input Voltage Range(5)

VIN

2.6

-

6.6

V

VIN Pin Supply Current

Charger enabled(6)

Charger disabled

IIN

-

1400

360

2000

450

μA

Regulated Output Voltage

VIN = 5.0V; IBAT = 10mA; TA = 25°C

VIN = 5.0V; IBAT = 10mA; TA = -40 to 85°C

VBAT

4.185

4.170

4.20

4.215

4.230

V

Power MOSFET On Resistance

VBAT = 4.0V; IBAT = 400mA; ICHG = 500mA

RDS(ON)

-

330

475

m

Ω

BAT Pin Standby Current

VIN not powered or charger disabled

ISTDBY

-

1.0

μA

Power On Reset

Rising VIN threshold

Falling VIN threshold

VPOR

3.5

2.4

3.6

2.5

3.7

2.6

V

VIN-BAT Offset Voltage

Rising threshold

Falling threshold

VOS

-

1.0

-

60

22

mV

Over-voltage Protection Rising Threshold

VOVP

6.6

6.8

7.0

V

Over-voltage Protection Threshold Hysteresis

VOVPHYS

-

200

-

mV

CHARGE CURRENT

Constant Current Mode Charge Current Range(7)

ICHG

0.05

-

1.0

A

ICHG Accuracy

For ICHG between 300mA to 1000mA (tested at 450mA)

For ICHG between 50mA to 300mA

(7)

ICHG

94%

90%

100%

106%

110%

ICHG

Trickle-Mode Charge Current

ITRKL

18%

20%

22%

ICHG

End-of-Charge (EOC) Threshold

When ICHG >300mA (tested at ICHG=450mA)

When ICHG <300mA

(7)

IEOC

8.5%

8.0%

10%

11.5%

12%

ICHG

ISET-Pin Voltage for ICHG Reference

VISET

-

1.0

-

V

Notes

5.

Refer to the Power-on-Reset parameter for VIN turn on and turn off values.

6.

Supply current does not include the current delivered to the battery through the BAT pin.

7.

Not tested. The accuracy is guaranteed by design.

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