LTC3588EMSE-1/-2
1
DESCRIPTION
Demonstration Circuit 1459B is an energy harvesting
power supply featuring the LTC3588-1/LTC3588-2.
The LTC3588 integrates a low-loss full-wave bridge
with a high efficiency buck converter to form a com-
plete energy harvesting solution optimized for high
output impedance energy sources such as piezoelec-
tric transducers. An ultralow quiescent current under-
voltage lockout mode with a wide hysteresis window
allows charge to accumulate on an input capacitor
until the buck converter can efficiently transfer a por-
tion of the stored charge to the output. Four output
voltages are pin selectable with up to 100mA of con-
tinuous output current. A power good comparator
produces a logic high referenced to VOUT on the
PGOOD pin when the converter reaches the pro-
grammed VOUT, signaling that the output is in regula-
tion.
The LTC3588EMSE-1/LTC3588EMSE-2 are available
in a 10-lead (3mm × 3mm) MSE surface mount pack-
age with exposed pad.
L
, LTC, LTM, LT, Burst Mode, OPTI-LOOP, Over-The-Top and PolyPhase are registered
trademarks of Linear Technology Corporation. Adaptive Power, C-Load, DirectSense, Easy
Drive, FilterCAD, Hot Swap, LinearView, µModule, Micropower SwitcherCAD, Multimode
Dimming, No Latency
∆Σ
, No Latency Delta-Sigma, No R
SENSE
, Operational Filter, PanelProtect,
PowerPath, PowerSOT, SmartStart, SoftSpan, Stage Shedding, SwitcherCAD, ThinSOT,
UltraFast and VLDO are trademarks of Linear Technology Corporation. Other product names
may be trademarks of the companies that manufacture the products.
TABLE 1
PERFORMANCE SUMMARY
LTC3588EMSE-1
Specifications are at T
A
= 25°C
SYMBOL PARAMETER
CONDITIONS
MIN MAX
UNITS
VIN
Input Voltage Range
4.3
18.0
V
VOUT 1.8V
Output Voltage Range
D0 = 0, D1=0
1.71
to
1.89
V
VOUT 2.5V
Output Voltage Range
D0 = 1, D1=0
2.425
to
2.575
V
VOUT 3.3V
Output Voltage Range
D0 = 0, D1=1
3.201
to
3.399
V
VOUT 3.6V
Output Voltage Range
D0 = 1, D1=1
3.491
to
3.708
V
PERFORMANCE SUMMARY
LTC3588EMSE-2
Specifications are at T
A
= 25°C
SYMBOL PARAMETER
CONDITIONS
MIN MAX
UNITS
VIN
Input Voltage Range
14.0
18.0
V
VOUT 3.45V Output Voltage Range
D0 = 0, D1=0
3.346
to
3.554
V
VOUT 4.1V
Output Voltage Range
D0 = 1, D1=0
3.977
to
4.223
V
VOUT 4.5V
Output Voltage Range
D0 = 0, D1=1
4.365
to
4.635
V
VOUT 5.0V
Output Voltage Range
D0 = 1, D1=1
4.850
to
5.150
V
DEMO CIRCUIT 1459B
QUICK START GUIDE
LTC3588EMSE-1
LTC3588EMSE-2
Piezoelectric Energy
Harvesting Power Supply
