Datasheet

15
LT1932
TYPICAL APPLICATIO S
U
Li-Ion Driver for Eight White LEDs Efficiency
V
IN
SW
D1
1932 TA13a
L1
4.7µH
V
IN
3V TO 4.2V
LT1932
SHDN
C1: TAIYO YUDEN JMK212BJ475 [phone]
C2: TAIYO YUDEN GMK316BJ105 [phone]
D1: ZETEX ZHCS400 [phone]
L1: MURATA LQH3C4R7M24 [phone]
61
4
R
SET
1.50k
3.3V DC
DIMMING
CONTROL
C1
4.7µF
C2
1µF
80.6k
2
35
LED
R
SET
GND
15mA
LED CURRENT (mA)
0
55
EFFICIENCY (%)
60
65
70
75
80
85
5101520
1932 TA13b
V
IN
= 4.2V
V
IN
= 3V
U
PACKAGE DESCRIPTIO
S6 Package
6-Lead Plastic SOT-23
(LTC DWG # 05-08-1634)
(LTC DWG # 05-08-1636)
L
DATUM ‘A’
.09 – .20
(.004 – .008)
(NOTE 2)
A1
S6 SOT-23 0401
A
A2
1.90
(.074)
REF
.20
(.008)
1.50 – 1.75
(.059 – .069)
(NOTE 3)
2.60 – 3.00
(.102 – .118)
.25 – .50
(.010 – .020)
(6PLCS, NOTE 2)
2.80 – 3.10
(.110 – .118)
(NOTE 3)
.95
(.037)
REF
PIN ONE ID
MILLIMETERS
(INCHES)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
4. DIMENSIONS ARE INCLUSIVE OF PLATING
5. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
6. MOLD FLASH SHALL NOT EXCEED .254mm
7. PACKAGE EIAJ REFERENCE IS:
SC-74A (EIAJ) FOR ORIGINAL
JEDEL MO-193 FOR THIN
.90 – 1.45
(.035 – .057)
.00 – 0.15
(.00 – .006)
.90 – 1.30
(.035 – .051)
.35 – .55
(.014 – .021)
1.00 MAX
(.039 MAX)
A
A1
A2
L
.01 – .10
(.0004 – .004)
.80 – .90
(.031 – .035)
.30 – .50 REF
(.012 – .019 REF)
SOT-23
(Original)
SOT-23
(ThinSOT)