Datasheet

0
10
20
30
40
50
60
1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3
Input Voltage (V)
Supply Current (mA)
G000
0
10
20
30
40
50
60
70
80
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Output Current (A)
Efficiency (%)
CSD17308Q2
CSD16301Q2
G000
bq500211A
SLUSBB1A – DECEMBER 2012–REVISED SEPTEMBER 2013 www.ti.com
PIN FUNCTIONS (continued)
PIN
I/O DESCRIPTION
NO. NAME
19 RESERVED O Reserved, leave this pin open.
20 RESERVED I Reserved, connect to GND.
48 RESERVED I External Reference Voltage Input. Connect this input to GND.
27 RESERVED I/O Reserved, leave this pin open.
28 RESERVED I/O Reserved, leave this pin open.
29 RESERVED I/O Reserved, leave this pin open.
30 RESERVED I/O Reserved, leave this pin open.
31 RESERVED I/O Reserved, connect 10-kΩ pull-down resistor to GND.
41 RESERVED O Reserved, leave this pin open.
5 RESET I Device reset. Use a 10-kΩ to 100-kΩ pull-up resistor to the 3.3-V supply.
6 SLEEP O Low-power mode output. Starts low-power ping cycle.
2 Sensor Input. Device shuts down when below 1 V. If not used, keep above 1 V by
T_SENSE I
connecting to the 3.3-V supply.
46 I Transmitter input voltage, used for efficiency calculations. Use 76.8-kΩ to 10-kΩ divider to
V_SENSE
minimize quiescent current.
34 — Analog 3.3-V Supply. This pin can be derived from V33D supply, decouple with 10-Ω resistor
V33A
and additional bypass capacitors
33 — Digital core 3.3-V supply. Be sure to decouple with bypass capacitors as close to the part as
V33D
possible.
Typical Characteristics Curves
Figure 1. bq500211A Supply Current vs. VCC Voltage Figure 2. System Efficiency Using Alternate MOSFETs
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