AS1302 datasheet(5/19 Pages) AMSCO

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AS1302

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

6 Electrical Characteristics

VBATT = 2.9V to 5.15V, VOUT = 5V, COUT = CBAT = 2.2µF, CFLY1 = CFLY2 =220nF, TAMB = -40 to +85ºC. Typical values

are at TAMB = +25ºC and VIN = 3.3V, unless otherwise specified.

Table 3. Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VBATT(on) Undervoltage Lockout

Rising VBATT

2.8

2.9

VBATT(off)

Undervoltage Lockout

Falling VBATT

2.4

2.5

2.8

VBATT

Battery Supply Voltage

2.9

5.15

VOUT

Output Voltage Accurracy

IOUT = 0mA, 15mA

4.85

5.0

5.15

ΔVO/ΔIO11 Load Regulation in 1:1 Mode

VBATT = 5.4V, IOUT = 10~30mA

mV/mA

ΔVO/ΔIO23 Load Regulation in 2:3 Mode

VBATT = 4.3V, IOUT = 10~30mA

ΔVO/ΔIO12 Load Regulation in 1:2 Mode

VBATT = 3.3V, IOUT = 10~30mA

Vtgr11/23

Mode Switching Voltage

1:1 / 2:3 mode, falling VBATT

5.1

Vtgr23/12

2:3 / 1:2 mode, falling VBATT

3.6

Mode switching voltage hysteresis

150

IOUT

Load Current

1. The device is tested in a proprietary test mode.

Vripple

Output Voltage Ripple

VBATT = 3.6V, IOUT = 30mA

mVPP

VBATT = 3.6V, IOUT = 2mA

mVPP

Iinr

Inrush Current

2. The inrush current is limited by the internal soft-start circuitry.

Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or

SQC (Statistical Quality Control) methods.

150

Ishort

Short-Circuit Current

150

η12

Efficiency in Switching Mode

1:2 mode, VBATT = 2.9V,

IOUT = 30mA

η23

2:3 mode, VBATT = 3.8V,

IOUT = 30mA

IOP12

Operating Quiescent Current

VBATT = 3.4V (1:2 mode without load)

240

300

µA

IOP23

VBATT = 4.5V (2:3 mode without load)

170

230

IOP11

VBATT = 5.3V (1:1 mode without load)

100

150

IOFF

Shutdown Current

EN = 0V

0.01

µA

Input Levels

VIH

Input High Level

pin EN

1.1

5.5

VIL

Input Low Level

0.0

0.4

Timing

fOSC

Oscillator Frequency

VBATT = 3.6V, IOUT = 30mA

0.9

1.2

1.5

MHz

VBATT = 3.6V, IOUT = 2mA

kHz

tSTART

Startup Time

0.5

Thermal Regulation

TOFF

Temperature Shutdown

Temperature rising

145

ºC

Hysteresis

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