BQ25505 Datasheet, PDF (10/34 Pages) Texas Instruments – Ultra Low Power Boost Charger with Battery Management and Autonomous Power

bq25505
SLUSBJ3B – AUGUST 2013 – REVISED JANUARY 2014
VBAT_OV = 3.31 V, VBAT_OK = 2.82 V, VBAT_OK_HYST = 3.12 V, MPPT (V_OC) = 40%
L1 = 22 µH, CIN = CSTOR = 4.7 µF, CBYP=0.1 µF, CREF = 10 nF
R_OK1 = 4.99 MΩ, R_OK2 = 6.65 MΩ, R_OK3 = 1.24 MΩ, R_OV1 = 6.98 MΩ, R_OV2 = 5.76 MΩ
R_OC1 = 8.06 MΩ, R_OC2 = 12 MΩ
www.ti.com
MA4X79600LCT-ND
Vibration
Element
MA4X79600LCT-ND
CSTOR
ROC2
ROC1
VOC_SAMP
L1
LBOOST
VREF_SAMP
CIN
CREF
VSS
MPPT
VIN_DC
VSTOR VBAT_SEC
Host
GPIO1
GPIO2
EN
VBAT_OK
CBYP
VSTOR
Boost
Controller ^VBAT_OK
+ SEC_BAT
(rechargeable)
VBAT
VBAT_PRI
Ideal Diode OR
+
PRI_BAT
VB_PRI_ON
Cold Start
Nano-Power
Management
VB_SEC_ON
bq25505
ROV2
ROV1
ROK3
ROK2
ROK1
TPS62736
System
Load
Figure 4. Typical Piezoelectric Application Circuit with Primary and Secondary Batteries
10
Submit Documentation Feedback
Product Folder Links :bq25505
Copyright © 2013–2014, Texas Instruments Incorporated