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參數(shù)資料
| 型號： | PTN04050AAZT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 310 kHz SWITCHING FREQ-MAX, PDMA5 |
| 封裝： | ROHS COMPLIANT, DIP MODULE-5 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 699K |
| 代理商： | PTN04050AAZT |
www.ti.com
ELECTRICAL CHARACTERISTICS
SLTS250 – SEPTEMBER 2005
operating at 25°C free-air temperature, V
I = 5 V, VO = –12 V, IO = IO (max), CI = 100 F, CO = 100 F (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO = –3.3 V to –6 V
0.2 (1)
1.0 (2)
VO = –9 V
0.1 (1)
0.6 (2)
IO
TA = 85°C, natural convection airflow
A
VO = –12 V
0.1 (1)
0.5 (2)
VO = –12.6 V to –15 V
0.1 (1)
0.3
PO
Output power
6
W
VI
Input voltage range
Over IO range
2.9
7
V
Set-point voltage tolerance
TA = 25°C
±3 (3)
%
Temperature variation
–40°C to +85°C
±0.5
%VO
Line regulation
Over VI range
0.5
%VO
VO
Load regulation
Over IO range
0.25
%VO
Includes set point, line, load
Total output voltage variation
±5 (3)
%VO
–40 < TA < 85°C
VO Adj
Output voltage adjust range
–15
–3.3
V
RSET = 523 , VO = –15 V, IO = 0.3 A
80
RSET = 1.96 k, VO = –12 V, IO = 0.5 A
82
η
Efficiency
RSET = 4.53 k, VO = –9 V, IO = 0.6 A
83
%
RSET = 15.4 k, VO = –5 V, IO = 1.0 A
82
RSET = 36.5 k, VO = –3.3 V, IO = 1.0 A
78
Vr
Output voltage ripple
20-MHz bandwidth
3% VO
V(PP)
IO (LIM)
Current limit threshold
Reset, followed by auto-recovery
150
%IOmax
Recovery time
100
s
1 A/s load step
Transient response
from 50% to 100% IOmax (4)
VO over/undershoot
2
%VO
FS
Switching frequency
Over VI and IO ranges
210
260
310
kHz
VI increasing
2.50
2.55
V
UVLO
Undervoltage lockout
VI decreasing
2.30
2.40
Input high voltage (VIH)
VI – 0.5
Open (5)
V
Inhibit control (pin 3)
Input low voltage (VIL)
–0.2
+0.25
Input low current (IIL)
10
A
II inh
Inhibit standby current
Inhibit (pin 3) to GND (pin 1)
470
A
CI
External input capacitance
100 (6)
F
Ceramic
0
100(7)
F
CO
External output capacitance
Nonceramic
100 (8)
560 (9)
F
Equivalent series resistance (nonceramic)
10 (10)
m
Per Telcordia SR-332, 50% stress,
MTBF
Calculated reliability
7.5
106 Hrs
TA = 40°C, ground benign
(1)
The module will operate down to no load with reduced specifications.
(2)
The maximum output current is 1 A or the maximum output power is 6 W, whichever is less.
(3)
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.
(4)
A load step from 66% to 100% IOmax for VO = –15 V.
(5)
This control pin has an internal pull-up to the input voltage, VI. If it is left open circuit, the module operates when input power is applied.
A small, low-leakage (< 100 nA) metal-oxide semiconductor field effect transistor (MOSFET) is recommended for control. See the
application Information for further guidance.
(6)
100
F of capacitance is required across the input (V
I and GND) for proper operation. Locate the ceramic capacitance close to the
module.
(7)
When using ceramic output capacitance equivalent to 100
F, a 100 F electrolytic capacitor is also required.
(8)
100 F of output capacitance is required for proper operation. See the application information for further guidance.
(9)
The minimum ESR limitation may result in a lower value for the output capacitance. See the Input/Output Capacitor Recommendations
for further guidance.
(10) This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 17 m
as the minimum when using maximum ESR values
to calculate.
3
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