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TPS61281AYFFT Datasheet(PDF) 8 Page - Texas Instruments

No. de pieza TPS61281AYFFT
Descripción Electrónicos  TPS6128xA Low-, Wide- Voltage Battery Front-End DC/DC Converter Single-Cell Li-Ion, Ni-Rich, Si-Anode Applications
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS61280A, TPS61281A, TPS61282A
SLVSCG9A – MAY 2014 – REVISED SEPTEMBER 2014
www.ti.com
Electrical Characteristics (continued)
Minimum and maximum values are at VIN = 2.3V to 4.85V, VOUT = 3.4V (or VIN, whichever is higher), EN = 1.8V, VSEL =
1.8V, nBYP = 1.8V, –40°C
≤ TJ ≤ 125°C; Circuit of Parameter Measurement Information section (unless otherwise noted).
Typical values are at VIN = 3.2V, VOUT = 3.4V, EN = 1.8V, TJ = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Power-save mode
PFM operation, IOUT = 1mA
30
mVpk
output ripple voltage
ΔVOUT
TPS6128xA
PWM mode output ripple voltage
PWM operation, IOUT = 500mA
15
mVpk
POWER SWITCH
Low-side switch MOSFET
VIN = 3.2, VOUT = 3.5V
45
80
m
on resistance
High-side rectifier MOSFET
rDS(on)
TPS6128xA
VIN = 3.2V, VOUT = 3.5V
40
70
m
on resistance
High-side pass-through MOSFET
VIN = 3.2V
35
60
m
on resistance
EN = AGND, VIN = VOUT = SW = 3.5V
Reverse leakage current into SW
0.1
2
µA
–40°C
≤ TJ ≤ 85°C
Ilkg
TPS6128xA
EN = BYP = VIN, VIN = 2.9V, VOUT = 4.4V, VSW = 0V
Reverse leakage current into
device not switching
0.11
2
µA
VOUT
–40°C
≤ TJ ≤ 85°C
ISINK
VOUT sink capability
TPS6128xA
EN = AGND, VOUT ≤ 3.6V,IOUT = -10mA
0.3
V
TPS61280A
VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C, auto
Valley inductor current limit
2475
3000
3525
mA
TPS61281A
PFM/PWM
VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C, auto
Valley inductor current limit
TPS61282A
3300
4000
4700
mA
PFM/PWM
EN = BYP = GND, VIN = 3.2V
5000
mA
Pass through mode current limit
TPS6128xA
EN = VIN, BYP = don't care , VIN = 3.2V
5600
7400
9100
mA
Pre-charge mode current limit
500
650
mA
(linear mode, phase 1)
TPS6128xA
VIN - VOUT >= 300mV
Pre-charge mode current limit
2000
mA
(linear mode, phase 2)
OSCILLATOR
fOSC
Oscillator frequency
TPS6128xA
VIN = 2.7V, VOUT = 3.5
2.3
MHz
THERMAL SHUTDOWN, HOT DIE DETECTOR
Thermal shutdown(1)
TPS6128xA
140
160
°C
Hot die detector accuracy(1)
TPS61280A
-10
105
+10
°C
TIMING
VIN = 3.2V, VOUT_TH = 01011 (3.4V), RLOAD = 50Ω
Start-up time
TPS6128xA
500
µs
Time from active VIN to VOUT settled
GPIO rise time(1)
TPS61280A
200
ns
(1)
Specified by characterization. Not tested in production.
8
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Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: TPS61280A TPS61281A TPS61282A


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