Datasheet
Performance Specification Summary
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2 Performance Specification Summary
See Data Sheet “Recommended Operating Conditions” for component adjustments. For details about the
resistor programmable settings, see bq25504 data sheet (SLUSAH0).
MIN NOM MAX UNIT
V
IN
(DC) DC input voltage into VIN_DC 0.13 3.0 V
V
IN_Start-up
(DC) DC minimum Start-up Voltage 330 mV
V
OV
Over Voltage – Sets maximum output voltage 2.9 3.1 3.3 V
V
UV
Under voltage setting for shorting VSTOR to VBAT 2.1 2.2 2.3 V
VBAT_OK indication toggles high when VSTOR ramps up 2.65 2.8 2.95 V
V
BAT_OK
VBAT_OK indication toggles low when VSTOR ramps down 2.25 2.4 2.55 V
MPPT Maximum Power Point Tracking, Programmed % of Open Circuit Voltage 78%
C
BAT
Battery Pin Capacitance or equivalent battery capacity 100 µF
3 Test Summary
3.1 Equipment
Power Supplies
Power Supply #1 (PS#1): Adjustable 5V Power supply with Current Limit of 100mA.
Power Supply #2 (PS#2): Adjustable 5V Power supply with 20Ω series impedance (can just be a discrete
resistor) with Current Limit of 100mA.
Loads
Load #1: 10kΩ, 5%, 0.25W resistor and 1kΩ, 5%, 0.25W resistor as per procedure P/S#2 series
resistance: 20Ω, 5%, 0.25W
Meters
Meter#1,2,3: Fluke 75 multi-meter, (equivalent or better) for voltage measurements
Scope
Standard scope with at least two channels
3.2 Equipment and EVM Setup
Table 1. I/O Connections and Configuration for Evaluation of bq25504 EVM
Jack Description Factory Setting
J1–VIN Input Source (+)
J1–GND Input Source Return (–)
J2–BAT Battery connection (+)
J2–GND Battery Connection Return (–)
J3 – VIN Input Source Sense (+) [for J1]
J3 -GND Input Source Return Sense (–) [for J1]
J4 – BAT_OK Battery Status Indicator (+)
J4 - GND Battery Status Indicator Return (–)
J5 – STOR Charger Output (+)
J5 – GND Charger Output Return (–)
J6 – STOR Charger Output Sense (+)
J6 – BAT Battery Connection Sense (+) [for J2]
J6 - GND Battery Connection Sense (–) [for J2]
JP1 MPPT setting: Enabled-Divider; Disabled-STOR Place Shunt on JP1-2/3 (Divider)
JP2 OCS Setting: C5 Capacitor-No Shunt; Disabled-Shunt on REF-GND No Shunt
(JP1 should be Disabled)
4
bq25504 EVM – Ultra Low Power Boost Converter with Battery Management for SLUU654A–October 2011–Revised October 2011
Energy Harvester Applications
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