BQ28550-R1 datasheet(7/42 Pages) TI1

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bq28550-R1

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SLUSAS4A – OCTOBER 2012 – REVISED SEPTEMBER 2014

Electrical Characteristics: Voltage Regulator (continued)

TA = –40 to +85ºC, VBAT =1.5 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT =3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VBAT = 3.6 V → 5.5 V, Rload = 100 Ω

Regulator off voltage

tVOFF

VREG = 2.5 V → 2.3 V, Cload = 0.1 µF,

100

µs

delay time

TA = 25°C

6.7 Electrical Characteristics: Power-On Reset

TA = –40 to +85ºC; Typical Values at TA = 25ºC (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Positive-going battery

VIT+

No external loading on VREG

2.125

2.200

2.275

voltage input at VREG

VHYS

No external loading on VREG

125

175

6.8 Electrical Characteristics: Internal Temperature Sensor Characteristics

TA = –40 to +85ºC; VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Temperature Sensor

GTEMP

–2

mV/°C

Voltage Gain

6.9 Electrical Characteristics: High Frequency Oscillator

TA = –40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

f(OSC)

Operating frequency

2.097

MHz

TA = 0°C to 60°C

–2.0%

0.38%

2.0%

f(EIO)

Frequency error (1), (2)

TA = –20°C to 70°C

–3.0%

0.38%

3.0%

TA = –40°C to 85°C

–4.5%

0.38%

4.5%

t(SXO)

Start-up time (3)

2.5

(1)

The frequency error is measured from 2.097 MHz.

(2)

The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C.

(3)

The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.

6.10 Electrical Characteristics: Low Frequency Oscillator

TA = –40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

f(LOSC)

Operating frequency

32.768

kHz

TA = 0°C to 60°C

–1.5%

0.25%

1.5%

f(LEIO)

Frequency error (1), (2)

TA = –20°C to 70°C

–2.5%

0.25%

2.5%

TA = –40°C to 85°C

–4.0%

0.25%

4.0%

t(LSXO)

Start-up time (3)

500

μs

(1)

The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C.

(2)

The frequency error is measured from 32.768 kHz.

(3)

The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.

6.11 Electrical Characteristics: Integrating ADC (Coulomb Counter) Characteristics

TA = –40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input voltage range,

VIN(SR)

VSR = V(SRN) – V(SRP)

–0.125

0.125

V(SRN) and V(SRP)

Conversion time

Single conversion

tCONV(SR)

Resolution

bits

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