參數(shù)資料
型號(hào): TPS22949ADRGR
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: 3 X 3 MM, GREEN, PLASTIC, SON-8
文件頁(yè)數(shù): 24/28頁(yè)
文件大?。?/td> 1001K
代理商: TPS22949ADRGR
www.ti.com
SLVS908C – FEBRUARY 2009 – REVISED JANUARY 2010
ABSOLUTE MAXIMUM RATINGS
(1)
MIN
MAX
UNIT
VI
Input voltage
VIN, EN1, EN2, V+
–0.3
6
V
VOUTCL
Current limiter output voltage
VIN + 0.3
V
TJ
Operating junction temperature range
–40
105
°C
Tstg
Storage temperature range
–65
150
°C
Human-Body Model
3.5
Electrostatic discharge protection (ESD)
kV
Charged-Device Model
1
(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.
DISSIPATION RATINGS
DERATING FACTOR ABOVE
BOARD
PACKAGE
R
θJC
R
θJA
TA = 25°C
TA < 25°C
TA = 70°C
TA = 85°C
High-K (JESD 51-7)
YZP
13.79°C/W
101.92°C/W
98.1 mW/°C
784 mW
343 mW
196 mW
High-K (JESD 51-5)
DRG
56.6°C/W
52.44°C/W
19 mW/°C
1525 mW
667 mW
381 mW
RECOMMENDED OPERATING CONDITIONS
MIN
MAX
UNIT
VIN
Input voltage(1)
1.62
4.5
V
VOUTCL
Current limiter output voltage
VIN
V
V+
Supply voltage
2.6
5.5
V
CIN
Input capacitor
1
μF
TA
Ambient free-air temperature
–40
85
°C
Control Inputs (EN1, EN2)
VIH
High-level input voltage
1.4
5.5
V
VIL
Low-level input voltage
0.4
V
(1)
ELECTRICAL CHARACTERISTICS
TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
EN1 and EN2 = V+
V+ = VOUT + 1.4 V or 2.5, whichever > 5.5 V,
IGND
Ground pin current
85
110
μA
VOUTCL ≥ VOUTLDO + 0.5 V
IOUT2 = 0 mA
Ground pin current (current
IGNDCL
EN1 = V+ and EN2 = 0
40
75
μA
limiter only)
EN1 and EN2 = GND,
VIN = V+ = 3.3 V
2
IGND(OFF)
OFF-state ground pin current
VOUTCL = Open,
μA
VIN = 3.6 V, V+ = 5.5 V
6
VOUTLDO = Open
IEN2
Enable pin 2 current, enabled
VEN2 = V+ =5.5 V, VIN = 4.5 V
1
μA
IEN1
Enable pin 1 current, enabled
VEN1 = V+ = 5.5 V, VIN = 4.5 V
1
μA
TPS22949
122
Shutdown threshold (TA)
TPS22949A
135
TPS22949
112
Thermal
Return from shutdown
°C
shutdown
TPS22949A
120
TPS22949
10
Hysteresis
TPS22949A
10
(1)
Typical values are at VIN = 3.3 V and TA = 25°C.
Copyright 2009–2010, Texas Instruments Incorporated
5
Product Folder Link(s): TPS22949 TPS22949A
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