LX2205 データシートの表示（PDF） - Microsemi Corporation

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LX2205

1A Li-Ion Battery Charger with Power Source Management

Microsemi Corporation 

LX2205

® 1A Li-Ion Battery Charger with Power Source Management

TM

PRODUCTION DATA SHEET

ELECTRICAL CHARACTERISTICS (CONTINUED)

Unless otherwise specified, the following specifications apply over the operating temperature -40ºC ≤ TA ≤ 85 ºC and the following test

conditions: VMDC = VUSB = 5V, VSYS =Open, VSUSP = VSHDN = Low, VUCL = High, VBAT = 3.9V, RCCP = 49.9k, RCUS = 2.26k, RCTP = 20k

Parameter

Symbol

Test Conditions

LX2205

Units

Min Typ Max

` USB CURRENT LIMIT

USB Low Current Limit

IUSB

VMDC = 0V, UCL = Low

85

93 100

mA

USB High Current Limit

IUSB

VMDC = 0V

425 463 500

mA

Reverse Leakage Current

ILEAK

VUSB = 0V

2

10

µA

CUS Bias Voltage

` LOGIC

CHG , DONE Logic High Output

VCUS

VOH

VSYS = 5.0V, IOH = -25uA

2.5

V

4.0 4.5

V

CHG , DONE Logic Low Output

VOL

VSYS = 5.0V, IOL = 5mA

0.4

V

Input Logic : UCL, SUSP, SHDN

VLOG(IN)

Logic Hi,

Logic Lo

1.2

V

0.4

Input Logic Current : UCL, SUSP,

SHDN

ILOG(IN)

Logic Hi, VLOG = 2V

Logic Lo, VLOG = 0V

0

2

4

µA

-2

0

2

Output Logic : DC OK

` THERMAL DIE PROTECTION

VLOG(OUT)

Logic Hi, 10K to 3.3V

Logic Lo, ILOG = 100µA

3.2

V

0.4

Battery Charger Thermal Limiter

TCTL

` BI-DIRECTIONAL PASS ELEMENT CONTROL

140

°C

Discharge Switch On Resistance

RDS(ON)

IBAT = -1A

275

mΩ

Charging Threshold

Discharging Threshold

VCHG

VDCH

VSYS – VBAT

VBAT – VSYS

40

mV

40

mV

Pass Element Switch Mode Delay

tsw

Charge–To–Discharge or Discharge–To–Charge

2.5

µs

Charging headroom

VSYS – VBAT, IBAT = 5mA

80

mV

Discharging headroom

` MDC INPUT

VBAT – VSYS, IBAT = -20mA

80

mV

DC OK Voltage Threshold

Hysteresis

VMDC

VMDC(HYS)

Rising

4.0 4.15 4.3

V

35

mV

MDC Input current

IMDC

` BATTERY TEMPERATURE MONITOR

15

35

µA

Cold Temp Fault Threshold

VTFB(COLD)

Rising Threshold ; as % of VSYS

Falling Threshold; as % of VSYS

73

75

77

%

71

73

75

%

Hot Temp Fault Threshold

VTFB(HOT)

Falling Threshold; as % of VSYS

Rising Threshold; as % of VSYS

27 28.5 30

%

28 29.5 31

%

TFB Disable Voltage Threshold

VTFB(DIS)

70

100 150

mV

Copyright © 2007

Rev. 1.0a, 2007-03-02

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

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