BQ50002 Datasheet, PDF (6/35 Pages) Texas Instruments – Low-Cost 5-V Wireless Power Transmitter Analog Front

bq50002
SLUSBW1A – OCTOBER 2015 – REVISED OCTOBER 2015
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6.4 Thermal Information
THERMAL METRIC ⁽¹⁾
bq50002
QFN
UNIT
32 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
40.6
°C/W
32.1
°C/W
13.1
°C/W
0.8
°C/W
13.0
°C/W
5.7
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 Electrical Characteristics
–40°C ≤ TJ ≤ 125°C, V_PVIN1 = 5V, V_PVIN2 = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
INPUT VOLTAGE (VIN)
UVLO rising threshold
UVLO falling threshold
REGULATOR VOLTAGE (BP3)
V_IN rising
V_IN falling
3.75
3.90
4.20
V
3.60
3.85
4.08
V
BP3 output voltage
I_BP3 = –5 mA, V_PVIN1 = V_PVIN2 = 5.0
V
2.9
3.0
3.1
V
BP3 output voltage
I_BP3 = –10 mA, V_PVIN1 = V_PVIN2 = 5.0
V
2.9
3.0
3.1
V
BP3 load current max
V_BP3 = 2.7 V, V_PVIN1 = V_PVIN2 = 5.0
V
7.7
14
21 mA
CURRENT SENSE AMPLIFIER (CSP, CSN)
Current sense amplifier gain
Current sense amplifier offset
Input current (CSP)
0°C < T_J < 85°C
0°C < T_J < 85°C
V_CSP = 5.0 V, V_PVIN1 = V_PVIN2 = 5.0
V
49
50
-14
1.5
51 V/V
14 mV
mA
Input current (CSN)
V_CSN = 5.0 V, V_PVIN1 = V_PVIN2 = 5.0
V
8.5
10.0
11.3
μA
EN
High-level input voltage
Input rising
1.7
1.8
1.9
V
Low-level input voltage
Input falling
0.8
1.0
1.1
V
EN pull-down resistance
EN = 3 V
40
50
60
kΩ
PWM_CTRL
High-level input voltage
Input rising
1.4
1.6
1.8
V
Low-level input voltage
Input falling
0.9
1.0
1.1
V
PWM_CTRL pull-down resistance PWM_CTRL = 3 V
40
50
60
kΩ
6
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