LTC3588EDD-2#TRPBF Linear Technology, LTC3588EDD-2#TRPBF Datasheet - Page 14

• Manufacturer Part Number: LTC3588EDD-2#TRPBF
• Description: IC ENERGY HARVESTING PSU 10DFN
• Manufacturer: Linear Technology

Specifications of LTC3588EDD-2#TRPBF

• Applications: Energy Harvesting
• Current - Supply: 950nA
• Voltage - Supply: 2.7 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIONS INFORMATION
LTC3588-2
The frequency of the emission will be 120Hz for magnetic
ballasts but could be higher if the light uses electronic
ballast. The LTC3588-2 bridge rectifi er can handle a wide
range of input frequencies.
Figure 9 shows the LTC3588-2 powered by a 48V com-
munications line. In this example, 1mA is the maximum
current that is allowed to be drawn. The 28k current limiting
resistor sets this current as the LTC3588-2 will shunt V
at 20V. The advantage of this scheme is that the current at
the output is multiplied by the ratio of V
loss in the buck converter). This is useful in cases where
greater current is needed at the output than is available
at the input. The high UVLO of 16V prevents any start-up
issue as there is already a good multiplication factor at that
PACKAGE DESCRIPTION
14
3.55 0.05
2.15 0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
0.25 0.05
1.65 0.05
(2 SIDES)
2.38 0.05
(2 SIDES)
0.50
BSC
0.70 0.05
IN
PACKAGE
OUTLINE
to V
(Reference LTC DWG # 05-08-1699 Rev C)
(SEE NOTE 6)
10-Lead Plastic DFN (3mm × 3mm)
OUT
TOP MARK
(less the
PIN 1
0.200 REF
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2).
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
DD Package
CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT
TOP AND BOTTOM OF PACKAGE
IN
level. This same technique can be extended to AC source
that also have limited current available at the input.
48V
Figure 9. Current Fed 3.45V LiFePO
1mA
47μF
25V
28k
3.00 0.10
0.75 0.05
(4 SIDES)
1μF
6V
4.7μF
6V
0.00 – 0.05
1.65 0.10
PZ1
V
CAP
V
D1
D0
(2 SIDES)
IN
IN2
LTC3588-2
GND
BOTTOM VIEW—EXPOSED PAD
PGOOD
5
V
R = 0.125
6
PZ2
OUT
SW
2.38 0.10
(2 SIDES)
TYP
4
Battery Charger
22μH
PGOOD
10μF
6V
10
1
35882 F09
0.50 BSC
0.25 0.05
0.40 0.10
+
(DD) DFN REV C 0310
PIN 1 NOTCH
R = 0.20 OR
0.35 45
CHAMFER
LiFePO
V
3.45V
3.5mA
OUT
4
35882f