LT3028 LINER [Linear Technology], LT3028 Datasheet - Page 15

• Manufacturer Part Number: LT3028
• Description: Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs
• Manufacturer: LINER [Linear Technology]

APPLICATIONS
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
voltage may be held up while the input is either pulled to
ground, pulled to some intermediate voltage or is left open
circuit.
When the IN pin of the LT3028 is forced below either OUT
pin or either OUT pin is pulled above the IN pin, input current
PACKAGE DESCRIPTIO
6.60 ±0.10
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
U
(.0035 – .0079)
0.09 – 0.20
4.50 ±0.10
RECOMMENDED SOLDER PAD LAYOUT
INFORMATION
U
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
(.169 – .177)
SEE NOTE 4
4.30 – 4.50*
(.020 – .030)
0.50 – 0.75
(.141)
MILLIMETERS
3.58
W
0.65 BSC
(INCHES)
U
0.45 ±0.05
16-Lead Plastic TSSOP (4.4mm)
(.116)
(Reference LTC DWG # 05-08-1663)
2.94
1.05 ±0.10
U
Exposed Pad Variation BB
0.25
REF
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
4. RECOMMENDED MINIMUM PCB METAL SIZE
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
FOR EXPOSED PAD ATTACHMENT
0° – 8°
FE Package
for the corresponding regulator will typically drop to less
than 2µA. This can happen if the input of the device is
connected to a discharged (low voltage) battery and the out-
put is held up by either a backup battery or a second regu-
lator circuit. The state of the SHDN1/SHDN2 pin will have
no effect on the reverse output current when the output is
pulled above the input.
(.0256)
0.65
BSC
16 1514 13 12 11
1
(.0077 – .0118)
0.195 – 0.30
2
TYP
(.193 – .201)
3 4 5 6 7 8
4.90 – 5.10*
(.141)
3.58
10
9
(.002 – .006)
0.05 – 0.15
FE16 (BB) TSSOP 0204
(.0433)
(.116)
2.94
MAX
1.10
(.252)
6.40
BSC
LT3028
15
3028f