CAT37_08 Datasheet, PDF (12/13 Pages) Texas Instruments – CMOS White LED Driver Boost Converter

CAT37
REVISION HISTORY
Date
25-Sept-03
25-Sept-03
6-Nov-03
8-Dec-03
10-Dec-03
18-Dec-03
22-Dec-03
9-June-04
15-June-04
22-Sept-04
1-Nov-04
07-July-05
19-May-08
Rev.
H
I
J
K
L
M
N
O
P
Q
R
S
T
Reason
Updated Ordering Information - part numers
Changed L1 for each figure from 22µH to 6.8µH
Changed VIN for Typical Application from 2.7V to 4.2V to 3V to 5V
Changed C1 for each typical application circuit from 4.7µF to 1µF
Changed C2 for each typical application circuit from 2.2µF to 1µF
Changed VIN for each for each typical application circuit from 1.8V to 3V to 3V to 4.2V
Updated Ordering Information - part numbers
Updated Features
Changed R1 for Typical Application figure and Typical Application Circuit figures from
6.34Ω to 6.8Ω
Updated Description (2V to 2.5V input supply voltage)
Updated Ordering Information (added package marking code)
Updated Electrical Specifications
Updated Table 4 (R1 Resistor Value) with new values
Updated LED dimming with logic signal (0.095V to 0.105V)
Updated Typical Application figures
Updated Electrical Specifications
Updated Operation text
Updated LED current programming text
Updated Table 4 (R1 Resistor Value) with new values
Updated LED dimming equations
Updated Typical Application Circuit figures
Updated FB Pin Leakage Current in Electrical Specifications
Added Typical Characteristics graphs (pages 4-6)
Added Efficiency graphs to Typical Application Circuits
Changed package drawing for 5-lead SOT-23
Updated Absolute Maximum Ratings
Deleted temp range from Electrical Specifications
Added Recommended Operating Conditions
Updated Block Diagram
Updated Electrical Specifications (changed V_RSET to V_FB in I_Q)
Reoved Preliminary data sheet designation
Added Green Packages in all areas
Eliminated TDFN (3 x 4.9mm) package Updated Ordering Information
Update Features
Update Description
Update Ordering Information
Update Pin Configuration Update Pin Description
Update Block Diagram
Update Package Outlines
Add TSOT-23 in NiPdAu plated finish
Add Example of Ordering Information
Update Package Outline Drawing
Add MD- to document number
Doc. No. MD-5005 Rev. T
12
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Characteristics subject to change without notice