Datasheet

bq24155
www.ti.com SLUS942 –FEBRUARY 2010
ORDERING INFORMATION
(1)
Part NO. MARKING MEDIUM QUANTITY
bq24155RGYR bq24155 Tape and Reel 3000
bq24155RGYT bq24155 Tape and Reel 250
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
DISSIPATION RATINGS
(1)
T
A
≤ 25°C DERATING FACTOR
PACKAGE R
qJA
R
qJC
POWER RATING T
A
> 25°C
QFN-14
(1)
55°C/W
(2)
15°C/W 1.82 W 0.018 W/°C
(1) Maximum power dissipation is a function of T
J
(max), Rq
JA
and T
A
. The maximum allowable power dissipation at any allowable ambient
temperature is P
D
= [T
J
(max)-T
A
] / Rq
JA
.
(2) This data is based on using a JEDEC High-K 4-layer board and the exposed die pad is connected to a Cu pad on the board. The pad is
connected to the ground plane by a via matrix.
ABSOLUTE MAXIMUM RATINGS
(1) (2)
over operating free-air temperature range (unless otherwise noted)
VALUE UNIT
Supply voltage range (with
V
SS
VBUS –0.3 to 20
(3)
V
respect to PGND)
Input voltage range (with
V
I
SCL, SDA, ISEL, CSIN, CSOUT, AUXPWR –0.3 to 7 V
respect to and PGND)
PMID, STAT –0.3 to 20 V
Output voltage range (with
V
O
VREF 6.5 V
respect to and PGND)
SW, BOOT –0.7 to 20 V
Voltage difference between CSIN and CSOUT inputs (V
(CSIN)
-V
(CSOUT)
) ±7 V
Voltage difference between BOOT and SW inputs (V
(BOOT)
-V
(SW)
) –0.3 to 7 V
Output sink STAT 10 mA
I
O
Output current (average) SW 1.25 A
T
A
Operating free-air temperature range –40 to 85 °C
T
J
Junction temperature –40 to 150 °C
T
stg
Storage temperature –65 to 150 °C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage
values are with respect to the network ground terminal unless otherwise noted.
(2) All voltages are with respect to PGND if not specified. Currents are positive into, negative out of the specified terminal.
(3) The bq24155 family can withstand up to 10.6 V continuously and 20 V for a minimum of 432 hours.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
V
BUS
Supply voltage, VBUS 4 6
(1)
V
T
J
Operating junction temperature range 0 +125 °C
(1) The inherent switching noise voltage spikes should not exceed the absolute maximum rating on either the BOOT or SW pins. A tight
layout minimizes switching noise.
Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): bq24155