SMB135E-470V View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

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SMB135E-470V

Programmable Switch-mode, USB/AC Input Li+ Battery Charger with TurboCharge™ Mode*

Summit Microelectronics 

SMB135

DC OPERATING CHARACTERISTICS (CONTINUED)

TA= -30°C to +85°C, VIN = +5.0V, VFLOAT = +4.2V unless otherwise noted. All voltages are relative to GND.

Symbol Parameter

Conditions

Min Typ Max Unit

Switch-mode Controller

RRDSON

ILIMIT

D.C.

FET On-resistance

Current limit

Duty cycle

VIN = 5.0V

fOSC=1.25MHz, VBATT=3.0V

Maximum

Minimum

550

mΩ

1000

mA

100

%

0

%

Logic Inputs/Output

VIL

Input low level

All inputs except EN

VIH

Input high level

All inputs except EN

1.4

VILEN

Input low level

VIHEN

Input high level

1.2

VOL

SDA/STAT Output low level ISINK=3mA

600 mV

V

400 mV

V

300 mV

IBIAS

Input bias current

ISINK

STAT sink current

Battery Charger

1

µA

5

mA

VSENSE

Constant current sense

voltage

Fast-charge mode, maximum

voltage across sense resistor

52.5

mV

VTRICKLECHG

Trickle-charge to pre-charge

voltage threshold

2.0

V

ITRICKLECHG

VPRECHG

Trickle-charge current

Pre-charge to fast-charge

voltage threshold

100mV steps

10

mA

2.400

3.100 V

IPRECHG

∆IPRECHG

Nominal pre-charge current 12.5mA steps, RSENSE = 0.1Ω

25

Pre-charge current tolerance

IPRECHG = 100mA, RSENSE =

0.1Ω, T=0oC to +70oC

75

212.5 mA

100

125 mA

IFCHG

ICHG

Nominal Fast charge current

Nominal charge current

16 steps, RSENSE = 0.1Ω

USB500/100=VIN, Note 1

USB500/100=GND, Note 1

47.5

525 mA

495

525

555 mA

75

100

125 mA

∆ICHG

Fast charge current tolerance

IFCHG = 525mA, RSENSE =

0.1Ω, T=0oC to +70oC

495

525

555 mA

VFLT

∆VFLT

Float voltage range

Float voltage tolerance

20mV steps

T=+10oC to +50oC, VFLT =

4.2V

4.020

-1

4.620 V

+1

%

ITERM

∆ITERM

Charge termination current

15mA steps, RSENSE = 0.1Ω

25

Termination current tolerance

ITERM = 55mA, RSENSE = 0.1Ω,

T=0oC to +70oC

25

130 mA

85

mA

Note 1: The ACTUAL charging current always equals the nominal values given in the register tables minus IOFFSET, where IOFFSET is the device’s total

active current. The 525mA nominal value shown here is with the hex value F in register h00[7:4]. For USB1, the nominal value is the lower of the one

selected in the register and 100mA.

Note 2: Voltage, current and frequency accuracies are only guaranteed for factory-programmed settings. Changing any of these parameters from the

values reflected in the customer specific CSIR code will result in inaccuracies exceeding those specified above.

Note 3: The SMB135 device is not intended to function as a battery pack protector. Battery packs used in conjunction with this device need to provide

adequate internal protection and to comply with the corresponding battery pack specifications.

Summit Microelectronics, Inc

2106 3.1 11/4/2008

7

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