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參數(shù)資料
| 型號(hào)： | PTH03050WAST |
| 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 |
| 封裝： | SMT-6 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 590K |
| 代理商： | PTH03050WAST |
For technical support and further information, visit http://power.ti.com
Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Track Input Voltage
Vtrack
–0.3
—
Vin + 0.3
V
Operating Temperature Range
Ta
Over Vin Range
–40 (i)
—
85°C
Solder Reflow Temperature
Treflow
Surface temperature of module body or pins
235 (ii)
°C
Storage Temperature
Ts
—
–40
—
125°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
—500
—G’s
1 msec, Sine, mounted
Mechanical Vibration
Mil-STD-883D, Method 2007.2
—20
—
G’s
20-2000 Hz
Weight
—
2.9
—
grams
Flammability
—
Meets UL 94V-O
Notes:
(i) For operation below 0 °C the external capacitors m ust bave stable characteristics. use either a low ESR tantalum, Os-Con, or ceramic capacitor.
(ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
6-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
PTH03050W —3.3-V Input
SLTS212C – MAY 2003 – REVISED MAY 2004
Specifications (Unless otherwise stated, T
a =25 °C, Vin =3.3 V, Vo =2.5 V, Cin =100 F, Co1 =0 F, Co2 =0 F, and Io =Iomax)
PTH03050W
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
0.8 V
≤ V
o ≤ 2.5 V,
85 °C, natural convection
0
—
6
(1)
A
Input Voltage Range
Vin
Over Io range
2.95—
3.65V
Set-Point Voltage Tolerance
Vo tol
—
±2 (2)
%Vo
Temperature Variation
Regtemp
–40 °C <Ta < +85 °C
—
±0.5
—
%Vo
Line Regulation
Reg
line
Over Vin range
—
±10
—
mV
Load Regulation
Regload
Over Io range
—
±12
—
mV
Total Output Variation
Reg
tot
Includes set-point, line, load,
——±3 (2)
%Vo
–40 °C
≤ T
a ≤ +85 °C
Efficiency
η
Io =4 A
RSET = 2.21 k Vo = 2.5 V
—
94
—
RSET = 4.12 k Vo = 2.0 V
—
92
—
RSET = 5.49 k Vo = 1.8 V
—
91
—
%
RSET = 8.87 k Vo = 1.5 V
—
90
—
RSET = 17.4 k Vo = 1.2 V
—
88
—
RSET = 36.5 k Vo = 1.0 V
—
87
—
Vo Ripple (pk-pk)
Vr
20 MHz bandwidth, Co2 =10 F ceramic
—
20 (3)
—
mVpp
Over-Current Threshold
Io trip
Reset, followed by auto-recovery
—
12
—
A
Transient Response
1 A/s load step, 50 to 100 % Iomax,
Co1 =100 F
ttr
Recovery Time
—
70
—
Sec
Vtr
Vo over/undershoot
—
100
—
mV
Track Input Current (pin 2)
IIL track
Pin to GND
—
–130 (4)
A
Track Slew Rate Capability
dVtrack/dt
Cout ≤Cout(max)
—
1
V/ms
Under-Voltage Lockout
UVLO
Vin increasing
—
2.452.8
V
Vin decreasing
2.2
2.40
—
Inhibit Control (pin4)
Referenced to GND
Input High Voltage
VIH
Vin –0.5—
Open (4)
V
Input Low Voltage
VIL
–0.2
—
0.6
Input Low Current
IIL inhibit
Pin to GND
—
–130
—
A
Input Standby Current
Iin inh
Inhibit (pin 4) to GND, Track (pin 2) open
—
10
—
mA
Switching Frequency
s
Over Vin and Io ranges
550
600
650
kHz
External Input Capacitance
Cin
100 (5)
——F
External Output Capacitance
Co1, Co2
Capacitance value
non-ceramic
0
100 (6)
3,300 (7)
F
ceramic
0
—
300
Equiv. series resistance (non-ceramic)
4 (8)
——m
Reliability
MTBF
Per Bellcore TR-332
6
——106 Hrs
50 % stress, Ta =40 °C, ground benign
Notes: (1) No derating is required when the module is soldered directly to a 4-layer PCB with 1 oz. copper.
(2) The set-point voltage tolerance is affected by the tolerance and stability ofRSET. The stated limit is unconditionally met if RSET has a tolerance of 1 %
with 100 ppm/°C or better temperature stability.
(3) The pk-pk output ripple voltage is measured with an external 10 F ceramic capacitor. See the standard application schematic.
(4) This control pin has an internal pull-up to the input voltage Vin. If it is left open-circuit the module will operate when input power is applied. A small
low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.
(5) A 100 F input capacitor is required for proper operation. The capacitor must be rated for a minimum of 300 mA rms of ripple current.
(6) An external output capacitor is not required for basic operation. Adding 100 F of distributed capacitance at the load will improve the transient response.
(7) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance.
(8) This is the typcial ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 m
as the minimum when using max-ESR values to calculate.
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