Diodes API9221 Bedienungsanleitung PDF herunterladen (Seite 5)

API9221

R/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

API9221

Document number: DS32204 Rev. 2 - 2

5 of 15

www.diodes.com

November 2011

NEW PRODUCT

Electrical Characteristics

API9221 is tested at VDC = VUSB = 5V at an ambient temperature of +25°C unless otherwise noted.

Symbol Parameter Test Conditions Min Typ. Max Unit

CHARGER POWER-ON THRESHOLDS

VPO

Rising VUSB/VDC Threshold

3.4 3.9 4.2 V

VPO

Falling VUSB/VDC Threshold

3.2 3.7 4.0 V

INPUT VOLTAGE OFFSET

VOS

Rising VDC or VUSB, relative

to V

BAT

= 4.0V, use

CHG

pin to indicate the

comparator output

- 150 250 mV

VOS

Falling VDC or VUSB, relative

to V

BAT

= 4.0V, use

CHG

pin to indicate the

comparator output

20 80 - mV

STANDBY CURRENT

STANDBY

BAT Pin Sink Current

= HIGH or both inputs

are floating

- 0.05 0.5 µA

VDC

VDC Pin Supply Current

= HIGH, I

LDO

= 0

- 380 460 µA

VUSB

VUSB Pin Supply Current

= HIGH, USB_BYP

disconnected

- 330 400 µA

VDC_VUSB

VDC/VUSB Pin Supply Current

= LOW, I

LDO

= 0,

USB_BYP disconnected

- 0.63 1.1 mA

VOLTAGE REGULATION

BATMAX

Final Output Voltage, BAT Pin

Load = 10mA 4.158 4.2 4.242 V

Load = 10mA

= +25°C)

4.174 4.2 4.226 V

DS(ON)_VDC

VDC Linear ON-resistance

BAT

=3.8V, I

VDC

= 0.3A,

= +25°C)

- 550 - m

DS(ON)_VUSB

VUSB Linear ON-resistance

BAT

= 3.8V, I

USB

= 0.3A,

= +25°C)

- 550 - m

CHARGE CURRENT

IVDC

VDC Pin Output Voltage

BAT

= 3.8V

1.22 1.25 1.28 V

VDC_CHRG

VDC Constant Current

IVDC

= 12.4k,

BAT

= 2.7V to 3.8V

450 550 600 mA

VDC_TRKL

VDC Trickle Charge Current

IVDC

= 12.4k,

BAT

= 2.2V, given as a %

of the I

VDC_CHARGE

15 17 19 %

1 2 3 4 5 6 7 8 9 10 ... 14 15

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