Diodes API9221 Manuel d'utilisateur télécharger pdf (Page 6)

API9221

R/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

API9221

Document number: DS32204 Rev. 2 - 2

6 of 15

www.diodes.com

November 2011

NEW PRODUCT

Electrical Characteristics (cont.)

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

IUSB

IUSB Pin Output Voltage

BAT

= 3.8V

1.22 1.25 1.28 V

USB_CHRG

VUSB Constant Current

IUSB

= 29.4k,

BAT

= 2.7V to 3.8V

180 232 260 mA

USB_TRKL

VUSB Trickle Charge Current

IUSB

= 29.4k,

BAT

= 2.2V and if

USB_CHRG

 I

VDC_TRKL

then given as a % of the

USB_CHRG

15 17 19 %

If I

USB_CHRG



VDC_TRKL

USB_CHRG

- %

MIN

DC and USB End-of-Charge

Threshold

MIN

= 10k

40 55 70 mA

PRECONDITIONING CHARGE THRESHOLD

MIN

Preconditioning Charge

Threshold Voltage

2.5 2.6 2.7 V

RECHARGE THRESHOLD

RCH

Recharge Threshold Voltage 3.8 3.9 4.0 V

PROTECTIONS

OVP

VDC

VDC Overvoltage Level 6.7 6.9 7.1 V

HOVP

VDC

VDC Overvoltage Hysteresis - 240 340 mV

OVP

VUSB

VUSB Overvoltage Level 5.3 5.4 5.55 V

HOVP

VUSB

VUSB Overvoltage Hysteresis - 150 200 mV

OCP

Short Circuit (USB_BYP) - 400 600 mA

BYPASS FETS

USB_R

DS(ON)

Resistance VUSB to USB_BYP

Measured at 200mA,

4.3V < V

< 5.3V

- 1.16 2.0 

VUSB

Dropout VUSB to USB_BYP

OUT

= 150mA

VUSB

> 4.3V

- 200 - mV

1 2 3 4 5 6 7 8 9 10 11 ... 14 15

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Diodes API9221 Manuel d'utilisateur Page 6

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