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Description
Demonstration circuit 2043A is a lead Acid Battery Balancer
featuring the
LTC
3305. The LTC3305 balances up to 4
®
lead acid batteries connected in series and incorporates all
voltage monitoring, gate drive and fault detection circuitry.
The LTC3305 employs an auxiliary battery or an alternative
storage cell to transfer charge to or from each individual
battery within the stack. There are two operating modes,
TIMER mode and CONTINUOUS mode, selected by the
MODE pin. In TIMER mode, once the balancing operation
is complete, the LTC3305 goes to a low power state for
a programmed time and then periodically rebalances the
BoarD photo
Figure 1. DC2043A Demo Board
DEMO MANUAL DC2043A
Lead Acid Battery Balancer
batteries. In CONTINUOUS mode, the balancing operation
continues even after the batteries are balanced to their
programmed termination voltage.
The LTC3305EFE is available in a 7mm × 7mm 38-lead
TSSOP surface mount package with exposed pad.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2043A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Figure 2. Thermal Image of DC2043A
LTC3305EFE
dc2043af
1
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Table of Contents
Related Manuals for Linear Technology LTC3305EFE
Summary of Contents for Linear Technology LTC3305EFE
- Page 1 TIMER mode and CONTINUOUS mode, selected by the MODE pin. In TIMER mode, once the balancing operation L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear is complete, the LTC3305 goes to a low power state for Technology Corporation.
- Page 2 DEMO MANUAL DC2043A performance summary Specifications are at T = 25°C SYMBOL PARAMETER CONDITIONS UNITS Battery Voltage Range 16.0 Termination Voltage Range TERM2 = 0, TERM1 = 0 ±5 ±20 TERMINATE Termination Voltage Range TERM2 = 0, TERM1 = 1 ±17.5 ±32.5 TERMINATE...
- Page 3 DEMO MANUAL DC2043A operatinG principLe In TIMER mode, the balancing operation continues for a maximum of the programmed t time. After the t time, LTC3305 is put into a low power off state for a programmed BAT CURRENT time, even though the batteries may not be balanced. Once the t time expires, the LTC3305 is put into the ON state and normal operation resumes.
- Page 4 DEMO MANUAL DC2043A QuicK start proceDure Using short twisted pair leads for any power connections, 5. Set JP2 to EN. Measure the voltage from the BOOST with all loads and power supplies off, refer to Figure 5 for Test Point to V4. The voltage should read approximately the proper measurement and equipment setup.
- Page 5 DEMO MANUAL DC2043A QuicK start proceDure Figure 5. Proper Measurement Equipment Set-Up dc2043af...
- Page 6 RES, CHIP, 249, 1/4W, 1%, 1206 VISHAY, CRCW1206249RFKED DISC, TH, PTC, 0.15Ω, 16V, 10.1mm DIA, MURATA, PTGLESARR15M1B51B0 IC,SMT, LEAD ACID BATTERY BALANCER/EFE LINEAR, LTC3305EFE#PBF Additional Demo Board Circuit Components CAP., X7R, 4.7µF, 25V, 20%, 0805 TDK, C2012X7R1E475M D3, D6, D7...
- Page 7 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
- Page 8 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.
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