 English |
|
|
|
|
|
|
|
| TPS53318 Datasheet, PDF (3/34 Pages) Texas Instruments – High-Efficiency 8-A or 14-A Synchronous Buck Converter with Eco-mode | |||
| |||
| ◁ |
TPS53318, TPS53319
www.ti.com
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
VIN (main supply)
VDD
Input voltage range
VBST
VBST(with respect to LL)
EN, TRIP, VFB, RF, MODE, ROVP
Output voltage range
LL
PGOOD, VREG
Junction temperature range, TJ
SLUSAY8B â JUNE 2012 â REVISED MAY 2013
VALUE
MIN
MAX
1.5
22
4.5
25
4.5
28
4.5
6.5
â0.1
6.5
â1
27
â0.1
6.5
â40
125
UNIT
V
V
°C
ELECTRICAL CHARACTERISTICS
Over recommended free-air temperature range, VVDD=12 V (unless otherwise noted)
PARAMETER
CONDITIONS
SUPPLY CURRENT
VVIN
VIN pin power conversion input
voltage
VVDD
Supply input voltage
IVIN(leak)
VIN pin leakage current
IVDD
VDD supply current
IVDDSDN
VDD shutdown current
INTERNAL REFERENCE VOLTAGE
VVFB
VFB regulation voltage
VVFB
VFB regulation voltage
IVFB
VFB input current
LDO OUTPUT
VEN = 0 V
TA = 25°C, No load, VEN = 5 V, VVFB = 0.630 V
TA = 25°C, No load, VEN = 0 V
CCM condition(1)
TA = 25°C
0°C ⤠TA ⤠85°C
â40°C ⤠TA ⤠85°C
VVFB = 0.630 V, TA = 25°C
VVREG
IVREG
LDO output voltage
LDO output current(1)
VDO
Low drop out voltage
BOOT STRAP SWITCH
0 mA ⤠IVREG ⤠30 mA
Maximum current allowed from LDO
VVDD = 4.5 V, IVREG = 30 mA
VFBST
Forward voltage
IVBSTLK
VBST leakage current
DUTY AND FREQUENCY CONTROL
VVREG-VBST, IF = 10 mA, TA = 25°C
VVBST = 23 V, VSW = 17 V, TA = 25°C
tOFF(min)
Minimum off-time
tON(min)
Minimum on-time
SOFT START
TA = 25°C
VIN = 17 V, VOUT = 0.6 V, fSW = 1 MHz,
TA = 25 °C(1)
tSS
Internal soft-start time from
VOUT = 0 V to 95% of VOUT
OUTPUT VOLTAGE DISCHARGE
RMODE = 39 kΩ
RMODE = 100 kΩ
RMODE = 200 kΩ
RMODE = 470 kΩ
IDSCHG
Output voltage discharge current
VEN= 0 V, VSW= 0.5 V
(1) Ensured by design. Not production tested.
MIN TYP MAX UNIT
1.5
4.5
420
22 V
25.0 V
1 µA
590 µA
110 µA
0.600
V
0.597 0.600 0.603
0.5952 0.600 0.6048 V
0.594 0.600 0.606
0.01 0.20 µA
4.77 5.00
5.36 V
30 mA
250 mV
0.1
0.2 V
0.01 1.50 µA
150 260
35
400 ns
ns
0.7
1.4
2.8
5.6
5.0 6.6
ms
9.0 mA
Copyright © 2012â2013, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links: TPS53318 TPS53319
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese