PTH12010LAH datasheet(4/27 Pages) TI

4 / 27 page

www.ti.com

ELECTRICAL CHARACTERISTICS

PTH12010W, PTH12010L

SLTS205E–JUNE 2003–REVISED APRIL 2006

ELECTRICAL CHARACTERISTICS (continued)

TA =25°C, Vi =12V,VO = 3.3 V, Ci = 560 µF, CO =0 µF, and IO =IO max (Unless otherwise stated)

PTH12010W

CHARACTERISTICS

CONDITIONS

MIN

TYP

MAX

UNIT

nonceramic

0(8)

330(9) 6,600(10)

Capacitance value

µF

External output capacitance

ceramic

300

Equivalent series resistance (nonceramic)

4(11)

mΩ

Per Bellcore TR-332

MTBF

Reliability

6.4

106 Hr

50% stress, Ta =40 °C, ground benign

(8) When operating at an output voltage ≥ 3.3 V, 47-µF of external output capacitance is required for proper operation.

(9) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load improves the

transient response.

(10) This is the calculated maximum. The minimum ESR limitation often results in a lower value. When controlling the Track pin using a

voltage supervisor, CO(max) is reduced to 3300 µF. See the application notes for further guidance.

(11) This is the typical ESR for all the electrolytic (nonceramic) ouput capacitance. Use 7 mΩ as the minimum when using max-ESR values

to calculate.

TA =25°C, Vi =12V,VO = 1.8 V, Ci = 560 µF, CO =0 µF, and IO =IOmax (Unless otherwise stated)

PTH12010L

CHARACTERISTICS

CONDITIONS

MIN

TYP

MAX

UNIT

60 °C, 200 LFM airflow

12(12)

Output current

0.8 V ≤ VO≤ 1.8 V

25 °C, natural convection

12(1)

Input voltage range

Over IO range

10.8

13.2

Vo tol

Set-point voltage tolerance

±2(13)

%Vo

∆Regtemp Temperature variation

–40 °C <TA <85 °C

±0.5

%Vo

∆Regline

Line regulation

Over Vi range

±10

∆Regload

Load regulation

Over IO range

±12

∆Regtot

Total output variation

Includes set-point, line, load,

±3(2)

%Vo

–40°C ≤ TA≤ 85 °C

Vadj

Output voltage adjust range

Over Vi range

0.8

1.8

RSET = 130 Ω,Vo =1.8 V

RSET =3.57kΩ,Vo =1.5

Efficiency

IO=8A

RSET = 12.1 kΩ,Vo =1.2

RSET = 32.4 kΩ,Vo =1V

RSET = OPEN, Vo =0.8 V

Vo≤ 1 V

mVpp

VO ripple (peak-to-peak)

20 MHz bandwidth

Vo≤ 1V

%VO

Io trip

Overcurrent threshold

Reset, followed by auto-recovery

1 A/µs load step, 50 to 100 % Iomax, CO = 330

µF

Transient response

ttr

Recovery Time

µSec

∆Vtr

VO over/undershoot

100

VO adj

Margin up/down adjust

±5%

IIL margin Margin input current (pins 9 /10) Pin to GND

–8(14)

µA

(12) See SOA curves or consult factory for appropriate derating.

(13) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a

tolerance of 1%, with 100 ppm/°C (or better) temperature stability.

(14) A small, low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.

Submit Documentation Feedback

PTH12010LAH 数据表(PDF) 4 Page - Texas Instruments

PTH12010LAH 数据表(HTML) 4 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

数据表下载