LDS8141-002-T2 IXYS, LDS8141-002-T2 Datasheet - Page 8

• Manufacturer Part Number: LDS8141-002-T2
• Description: IC LED DRIVER WHIT BCKLGT 16WQFN
• Manufacturer: IXYS
• Series: LED-Sense™, Power-Lite™r
• Type: Backlight, White LED (I²C Interface)r

Specifications of LDS8141-002-T2

• Topology: High Side, Linear (LDO), PWM
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1.2MHz
• Voltage - Supply: 2.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-WQFN, 16-miniQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 32mA
• Internal Switch(s): Yes
• Efficiency: 80%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Details
• Other names: LDS8141-002-T2-2

LDS8161/41
Table 3
Note:
Table 4
Note:
Table 5: Ta-Tj Temperature Gradient Offset
( Set offset code to match reference De-rate point in LUT from LED Tj to Ta. Typically LED and Si are equal)
Note:
Table 6: Offset Codes for Tj-Ta Temperature Gradient Offset (both LED and Si per Table 5).
Table 7: T-code values vs. Temperature (for registers 4Ah & 4Bh)
Temperature
© 2009 IXYS Corp.
Characteristics subject to change without notice
Temperature
Register
Address
Register
Address
Register
Address
Offset
1Eh
1Fh
49h
(Ta-Tj)
25
30
35
40
45
0
*) Value by default
C
-40
-35
-30
-25
*) Value by default
**) Trim code defined by customer
Bit 7 = 1 — Software reset: resets device, all registers reset/cleared.
Bit 6 = 1 — Standby (oscillator disabled, all registers retain programmed values.)
*) Value by default
0
C
User should write 0
Software
reset = 1
Offset 3
Factory trimmed;
Bit 7
LED
Bit 7
0*
Factory Set
Bit3– Bit
Bit4 –
01100
01101
01110
01111
10000
Bit 0
1000
1001
1010
1011
Bit 7
1*
0
Offset 2
mode = 1
Standby
Bit 6
LED
Bit 6
0*
Temperature
Temperature
Normal operation = 0*
Offset
(Ta-Tj)
Factory
-20
-15
-10
0
50
55
60
65
70
Bit 6
Only
-5
C
0*
Offset 1
Bit 5
0
LED
Temperature
C
request = 1
0*
Bit 5
Factory
Bit 5
Only
0*
Bit3– Bit
Bit4 –
10001
10010
10011
10100
10101
1100
1101
1110
1111
Bit 0
Configuration Register
Offset 0
0
Bit 4
LED
Control Register
Factory
0*
Control Register
8
Bit 4
Only
0*
request = 1
Calibration
Temperature
Temperature
Bit 4
Offset
(Ta-Tj)
Factory
0
75
80
85
90
95
Bit 3
Si Diode
Only
Offset 3
10
15
C
0
5
0*
Bit 3
0*
0
C
disabled = 1*
Custom OSC
enabled = 0
preset = 0*
dT adjust
dT adjust
trim = 1
Factory
Bit 2
Bit 3
Bit4 –
10110
10111
11000
11001
11010
Bit3–
Bit 0
0000
0001
0010
0011
Bit 0
Si Diode
Offset 2
Bit 2
0*
Doc. No. 8141/61_DS, Rev. N1.0
Temperature
Temperature
enabled = 0*
trim 2
disabled = 1
Bit 2
Osc
Offset
Soft Start
Soft Start
**
Si Diode
Offset 1
(Ta-Tj)
Bit 1
Bit 1
100
105
110
115
120
20
25
30
35
0
0*
C
0
trim 1
Bit 1
Osc
C
**
Si Diode
Offset 0
Factory
trim 0
Bit 0
Bit 0
Bit 0
Only
Osc
Bit3–
Bit4 –
11011
11100
11101
11110
11111
Bit 0
0100
0101
0110
0111
Bit 0
**
0*
0*