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| 型號(hào)： | PTH04070WAD |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING REGULATOR, PDMA5 |
| 封裝： | ROHS COMPLIANT, DIP-5 |
| 文件頁(yè)數(shù)： | 11/17頁(yè) |
| 文件大?。?/td> | 409K |
| 代理商： | PTH04070WAD |
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ELECTRICAL CHARACTERISTICS
SLTS227B – SEPTEMBER 2004 – REVISED OCTOBER 2007
at 25C free-air temperature, VI = 5 V, VO = 3.3 V, IO = IO(Max), C1 = 47 μF, C2 = 47 μF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IO
Output current
TA = 85°C, natural convection airflow
0
3
A
VI
Input voltage range
Over IO range
3
5.5
V
VO(tol)
Set-point voltage tolerance
TA = 25°C
±2 (1)
%VO
Temperature variation
-40
≤ TA ≤ +85°C
±0.5
%VO
Line regulation
Over VI range
±1
mV
Load regulation
Over IO range
±5
mV
Includes set-point, line, load,
Total output voltage variation
±3 (1)
%VO
–40
≤ TA ≤ +85°C
VI ≥ 4.5 V
0.9
3.6
VO(adj)
Output voltage adjust range
V
VI < 4.5 V
0.9
VI – 1.1
(2)
TA = 25°C, IO = 2 A
RSET = 475 , VO = 3.3 V
(2)
92%
RSET = 2.32 k, VO = 2.5 V V
(2)
90%
RSET = 4.87 k, VO = 2 V
88%
η
Efficiency
RSET = 6.65 k, VO = 1.8 V
87%
RSET = 11.5 k, VO = 1.5 V
85%
RSET = 26.1 k, VO = 1.2 V
82%
RSET = 84.5 k, VO = 1 V
80%
Output voltage ripple
20 MHz bandwith
10
mVPP
IO(trip)
Overcurrent threshold
Reset, followed by autorecovery
7
A
C3 = 47
μF, 1 A/μs load step from 50% to
100% IOmax
Transient response
Recovery time
70
μs
VO over/undershoot
100
mV
VI = increasing
2.95
3
UVLO
Undervoltage lockout
V
VI = decreasing
2.7
2.8
Input high voltage (VIH)
VI – 0.5
Open (3)
V
Inhibit control (pin 5)
Input low voltage (VIL)
–0.2
0.6
Input low current (IIL)
–10
μA
II(stby)
Input standby current
Pin 5 connected to GND
1
mA
FS
Switching frequency
Over VI and IO ranges
700
kHz
External input capacitance
Ceramic type (C1)
47 (4)
μF
Ceramic type (C2)
47 (5)
200
μF
External output capacitance
Nonceramic type (C3)
47 (5)
560 (6)
Equivalent series resistance (nonceramic)
4 (7)
m
Per Bellcore TR-332, 50% stress,
MTBF
Calculated reliability
48
106 Hrs
TA = 40°C, ground benign
(1)
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 with 100 ppm/
°C or better temperature stability.
(2)
The minimum input voltage is 3 V or (VO + 1.1) V, whichever is greater. A 5-V input bus is recommended for output voltages higher than
2 V.
(3)
This control pin has an internal pullup 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) MOSFET is recommended for control. Do not tie the inhibit pin to VI or to another module's inhibit pin. See
the application section for further guidance.
(4)
An external 47-
μF ceramic capacitor is required across the input (VI and GND) for proper operation. Locate the capacitor close to the
module.
(5)
An external 47-
μF ceramic capacitor is required across the output (VO and GND) for proper operation. Locate the capacitor close to the
module. Adding another 47
μF of electrolytic capacitance close to the load improves the response of the regulator to load transients.
(6)
This is the calculated maximum capacitance. The minimum ESR limitation often results in a lower value. See the capacitor application
information for further guidance.
(7)
This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 7 m
as the minimum when calculating the total equivalent
series resistance (ESR) using the max-ESR values specified by the capacitor manufacturer.
Copyright 2004–2007, Texas Instruments Incorporated
3
Product Folder Link(s): PTH04070W
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| PTH04070WAZ | 功能描述:DC/DC轉(zhuǎn)換器 3-A 3.3/5-V Input Adj Swtch Regulator RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH04070WAZ | 制造商:Texas Instruments 功能描述:IC 制造商:Texas Instruments 功能描述:IC, ADJ SWITCHING REGULATOR, SMT MODULE |
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