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參數(shù)資料
| 型號： | PTD08A010WAG |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 877K |
| 代理商： | PTD08A010WAG |
www.ti.com
PRODUCTPREVIEW
ELECTRICAL CHARACTERISTICS
SLTS285A – MAY 2007 – REVISED JANUARY 2008
PTD08A010W
TA= 25°C, FSW= 350kHz, VI= 12 V, VO= 3.3 V, VB= VI, CI1= 330 F, CI2= 22 F ceramic, CO1= 47 F ceramic, CO2= 330 F,
and IO= IO(max) (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTD08A010W
UNIT
MIN
TYP
MAX
IO
Output current
Over VO range
25
°C, natural convection
0
10
A
VI
Input voltage range
Over IO range
4.75
14(1)
V
VOADJ
Output voltage adjust range
Over IO range
0.7
3.6
V
VO = 3.3 V
95%
VO = 2.5 V
92%
VI = VB = 5 V
VO = 1.8 V
89%
η
Efficiency
IO = 10 A,
VO = 1.5 V
88%
fs = 350 kHz
VO = 1.2 V
86%
VO = 1.0 V
84%
VOPP
VO Ripple (peak-to-peak)
20-MHz bandwidth
20
mVPP
VB
Bias voltage
4.75
14
V
VB increasing
4.25
4.5
4.75
VB
Bias voltage under voltage
V
UVLO
lockout
VB decreasing
4.0
4.25
4.5
Inhibit (pin 8) to AGND
Standby
4
IB
Bias current
mA
Switching
34
VIH
High-level input voltage
2.0
5.5
SRE, INH, & PWM input levels
V
VIL
Low-level input voltage
0.8
Frequency range
300
1000
kHz
PWM input
Duty cycle limts
10
100
%
Pulse width limits
100
s
Range
0
125
°C
Accuracy, -40
°C ≤ T
A ≤ 85°C
-4
6
°C
TEMP output
Slope
10
mV/
°C
Offset, TA = 0°C
500
mV
VOH
High-level output voltage
3.3
V
VOL
FAULT output
Low-level output voltage
0
ILIM
Overcurrent threshold; Reset, followed by auto-recovery
15
A
Range
0.6
1.6
V
Accuracy
4
%
IOUT output
Gain
0.1
V/A
Offset
0.6
V
Nonceramic
330 (2)
CI
External input capacitance
F
Ceramic
22 (2)
Nonceramic
330 (3)
tbd(4)
Capacitance Value
F
CO
External output capacitance
Ceramic
47 (3)
tbd
Equivalent series resistance (non-ceramic)
tbd(5)
m
(1)
The maximum input voltage is duty cycle limited to (VO/(100ns × FSW)) or 14 V, whichever is less. The maximum allowable input voltage
is a function of switching frequency.
(2)
A 22 F ceramic input capacitor is required for proper operation. An additional 330 F bulk capacitor rated for a minimum of 500mA rms
of ripple current is recommended. When operating at frequencies > 500kHz the 22 F ceramic capacitor is only recommended.
(3)
A 47 F ceramic output capacitor is required for basic operation. An additional 330 F bulk capacitor is recommended for improved
transient response. See the related Application Information section for further guidance. When operating at frequencies > 500kHz the 47
F ceramic capacitor is only recommended.
(4)
tbd F is the calculated maximum output capacitance. The minimum ESR limitation will often result in a lower value.
(5)
This is the minimum ESR for all non-ceramic output capacitance. Use tbd m
Ω as a minimum when using capacitor manufacturer's
maximum ESR values.
4
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): PTD08A010W
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