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TPS7510X Datasheet(PDF) 3 Page - Texas Instruments

Part No. TPS7510X
Description  Low Dropout, Two-Bank LED Driver with PWM Brightness Control
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPS7510X Datasheet(HTML) 3 Page - Texas Instruments

 
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ELECTRICAL CHARACTERISTICS
TPS7510x
SBVS080C – SEPTEMBER 2006 – REVISED MARCH 2007
Over operating junction temperature range (T
J = –40°C to +85°C), VIN = 3.8V, DxA and DxB = 3.3V, RSET = 32.4kΩ, and ENA
and ENB = 3.8V, unless otherwise noted. Typical values are at T
A = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ISHDN
Shutdown supply current
VENA,B = 0V, VDX = 0V
0.03
1.0
µA
IQ
Ground current
ISET = open, IDX = 5mA, VIN = 4.5V
170
200
µA
TA = +25°C
0
2
4
Current matching
∆I
D
%
(IDXMAX – IDXMIN/IDXMAX) × 100%
TA = –40°C to +85°C
5
∆I
DX%/∆VIN
Line regulation
3.5V
≤ V
IN ≤ 4.5V, IDX = 5mA
2.0
%/V
∆I
DX%/∆VDX
Load regulation
1.8V
≤ V
DX ≤ 3.5V, IDX = 5mA
0.8
%/V
Dropout voltage of any
IDXnom = 5mA
28
100
VDO
DX current source
mV
IDXnom = 15mA
70
(VDX at IDX = 0.8 × IDX, nom)
VISET
Reference voltage for current set
1.183
1.225
1.257
V
IOPEN
Diode current accuracy(1)
ISET = open, VDX = VIN – 0.2V
0.5
3
%
ISET
ISET pin current range
2.5
62.5
µA
k
ISET to IDX current ratio(1)
400
420
435
VIH
Enable high level input voltage
1.2
V
VIL
Enable low level input voltage
0.4
V
VENA = 3.8V
5.0
6.1
IINA
Enable pin A (VENA) input current
µA
VENA = 1.8V
2.2
VENB = 3.8V
4.0
4.9
IINB
Enable pin B (VENB) input current
µA
VENB = 1.8V
1.8
Delay from ENA and ENB = low to
tSD
Shutdown delay time
reach shutdown current
5
13
30
µs
(IDX = 0.1 × IDX, nom)
Shutdown, temp increasing
+165
TSD
Thermal shutdown temperature
°C
Reset, temp decreasing
+140
TJ
Operating junction temperature range
–40
+85
°C
(1)
Average of all four IDX outputs.
3
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