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TPS61252DGST Datasheet(PDF) 5 Page - Texas Instruments

No. de Pieza. TPS61252DGST
Descripción  TPS61252 Tiny 1.5-A Boost Converter With Adjustable Input Current Limit
Descarga  27 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS61252DGST Datasheet(HTML) 5 Page - Texas Instruments

 
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TPS61252
www.ti.com
SLVSAG3A – SEPTEMBER 2010 – REVISED DECEMBER 2014
8.5 Electrical Characteristics
Over recommended free air temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply
for condition VIN = EN = 3.6 V, VOUT = 5.0 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DC-DC STAGE
VIN
Input voltage
2.3
6
V
VFB
Feedback voltage
1.182
1.2
1.218
V
Lline regulation
0.5%
Load regulation
0.5%
f
Oscillator frequency
3250
kHz
High side switch on resistance
200
m
rDS(on)
Low side switch on resistance
130
m
Reverse leakage current into VOUT
EN = GND
3.5
µA
ILIM pin set to VIN
1500
mA
ILIM
Programmable valley switch current limit
RILIM = 20 kΩ (500mA)
-20%
+20%
IQ
Quiescent current
IOUT = 0 mA, device not switching
30
µA
ISD
Shutdown current
0.85
3.5
μA
Falling
6.4
V
OVP
Input over voltage protection threshold
Rising
6.5
V
CONTROL STAGE
Falling
2.0
2.1
V
VUVLO Under voltage lockout threshold
Hysteresis
0.1
V
VIL
EN input low voltage
2.3 V
≤ VIN ≤ 6.0 V
0.4
V
VIH
EN input high voltage
2.3 V
≤ VIN ≤ 6.0 V
1.0
V
EN, PG input leakage current
Clamped to GND or VIN
0.5
µA
Rising (% VOUT)
92.5%
95%
97.5%
Power Good threshold voltage
Falling (% VOUT)
87.5%
90%
92.5%
Power good delay
10
µs
Overtemperature protection
Rising
140
°C
Overtemperature hysteresis
20
°C
8.6 Typical Characteristics
Table 1. Table of Graphs
DESCRIPTION
FIGURE
Efficiency
vs Output current (VOUT = 5.0 V, ILIM = 1.5 A)
Figure 1
vs Output current in 100% Duty-Cycle Mode (VOUT = 5.0 V, ILIM = 1.5 A)
Figure 2
vs Input voltage (VOUT = 5.0 V, ILoad = {10; 100; 1000 mA}) , ILIM = 1.5 A
Figure 3
Maximum output current
vs Input voltage (VOUT = 5.0 V)
Figure 4
Output voltage
vs Output current (VOUT = 5.0V, ILIM = 1.5 A)
Figure 5
Copyright © 2010–2014, Texas Instruments Incorporated
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