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Part: PT6443C
Category:
Power Management
-> Plug-in Power Solutions->Non-Isolated->Single Posi
Description: ti PT6443, 2.0Vout 6A 3.3V/5V-Input Adjustable Step-down Isr
Company: Texas Instruments, Inc.
Datasheet: Download PT6443C datasheet File size : 59 kB
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Datasheet text preview:
PT6440 Series
6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator
SLTS133B
Revised (1/30/2002)
Features
· 6A Output Current · Input Voltage Range: 3.1 V to 5.5 V · 90% Efficiency · Adjustable Output Voltage · Standby Function · Short Circuit Protection · Small Footprint (0.61 in2) · Solderable Copper Case · 8.8 106 Hours MTBF
Description
The PT6440 ExcaliburTM power modules are a series of high performance Integrated Switching Regulators (ISRs), housed in a thermally efficient solderable copper case. These modules operate from input voltages as low as 3.1V to produce a high-output lowvoltage power source; ideal for powering the industry's latest DSP and microprocessors. The series includes standard output bus voltages as low as 1.0VDC. The innovative copper case construction provides superior thermal performance in a small footprint. Both through-hole and surface mount pin configurations are available. The PT6440 series operating features include external output voltage adjustment, an On/Off inhibit, and short-circuit protection. A 100µF input, and 330µF output capacitor are required for proper operation.
Ordering Information
P T 6 4 4 1H P T 6 4 4 2H P T 6 4 4 3H P T 6 4 4 4H P T 6 4 4 5H P T 6 4 4 6H P T 6 4 4 7H = = = = = = = 3.3 2.5 2.0 1.8 1.5 1.2 1.0 Volts Volts Volts Volts Volts Volts Volts
Pin-Out Information
Pin
1 2 3 4 5 6 7 8 9 10 11 12
Function
Inhibit * Vin Vin Vin GND GND GND GND Vout Vout Vout Vout Adj *
3.3V Input Bus Capable
PT Series Suffix (PT1234x )
Case/Pin Configuration Vertical Horizontal SMD Order Suffix Package Code * (EPH) (EPJ) (EPK)
N A C
* For further information, see application notes.
* Previously known as package styles 1540/50. (Reference the applicable package code drawing for the dimensions and PC board layout)
Standard Application
V O( A D J )
12
+ V IN
2,3,4
PT6440
1 5,6,7,8
9,10,11
+ V OUT
+
+
C IN INH GND
C OUT
GND
Cin = Required 100µF electrolytic Cout = Required 330µF electrolytic
For technical support and more information, see inside back cover or visit www.ti.com
PT6440 Series
6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator
Specifications
Characteristic Output Current
(Unless otherwise stated, Ta =25°C, Vin =5V, Cin =100µF, Cout =330µF, and Io =Iomax) Symbol Io Vin Vo tol Regtemp Regline Regload Votot Conditions Ta =+60°C, 200LFM Ta =+25°C, natural convection Over Io Range Min 0.1 (1) 0.1 (1) 4.5 3.1 -- -- -- -- -- Vo =3.3V Vo =2.5V Vo =2.0V Vo =1.8V Vo =1.5V Vo =1.2V Vo =1.0V -- -- -- -- -- -- -- -- -- -- -- 300 Vin0.5 0.2 -- -- 330 100 40 (3) 40 8.8 -- -- -- Materials meet UL 94V-0
PT6440 SERIES Typ Max
-- -- -- -- ±1 ±0.5 ±6 ±10 ±2 91 89 85 85 81 80 78 20 50 ±70 10 350 -- -- 0.5 +0.5 -- -- -- -- -- 500 20 (5) 23 6 6 5.5 5.5 ±2 (2) -- ±10 ±25 ±3 -- -- -- -- -- -- -- -- -- -- -- 400 Open (2) +0.5 -- 1,000 -- +85 (4) +125 -- -- -- --
Units A VDC %Vo %Vo mV mV %Vo
Input Voltage Range Set Point Voltage T lerance o Temperature Variation Line Regulation Load Regulation Total Output Voltage Variation Efficiency
Vo = 3.3V Vo 2.5V
40° Ta +85°C, Io =Iomin Over Vin range Over Io range Includes set-point, line, load, 40° Ta +85°C Io =4A
%
Vo Ripple (pk-pk) Transient Response Short Circuit Threshold Switching Frequency Inhibit (Pin 1) Input High Voltage Input Low Voltage Input Low Current Standby Input Current External Output Capacitance External Input Capacitance Operating T mperature Range e Storage T mperature e Reliability Mechanical Shock Mechanical Vibration Weight Flammability
Vr ttr Vtr Isc threshold s VIH VIL IIL Iin standby Cout Cin Ta Ts MTBF -- -- -- --
20MHz bandwidth 5A/µs load step, 50% to 100% Iomax Vo over/undershoot Over Vin and Io range Referenced to Vin (pin 8)
mVpp µs mV A kHz V mA mA µF µF °C °C 106 Hrs G's G's grams
pins 1 & 5 connected See application schematic See application schematic Over Vin range -- Per Bellcore TR-332 50% stress, Ta =40°C, ground benign Per Mil-Std-883D, method 2002.3, 1ms, half-sine, mounted to a fixture Mil-Std-883D, Method 2007.2, 20-2000Hz, soldered in PCB
Notes: (1) The ISR will operate at no load with reduced specifications. (2) The Inhibit control (pin 1) has an internal pull-up and if it is left open circuit the module will operate when input power is applied. The open-circuit voltage is the input voltage V in. Use a discrete MOSFET to control the Inhibit pin, and ensure a transitioin time of less than 10µs. Consult the related application note for other interface considerations. (3) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors. (4) See Safe Operating Area curves or contact the factory for the appropriate derating. (5) The case pins on through-hole package types (suffixes N & A) must be soldered. For more information consult the applicable package outline drawing. Input/Output Capacitors: The PT6440 regulator series requires a 100µF electrolytic (or tantalum) capacitor at the input and 330µF at the output for proper operation in all applications. In addition, the input capacitance, C in, must be rated for a minimum of 350mArms of ripple current, and the ESR of the output capacitor, Cout , must less than 100m @100kHz. For transient or dynamic load applications additional output capacitance may be necessary. For more information consult the related application note on capacitor recommendations.
For technical support and more information, see inside back cover or visit www.ti.com
PT6440 Series
6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator
Typical Characteristics
PT6440 Series Performance; @VIN =5.0V
Efficiency Vs Output Current
100
(See Note A)
PT6440 Series Performance; @VIN =3.3V
Efficiency Vs Output Current
100
(See Note A)
90
90
80
70
PT6441 PT6442 PT6443 PT6444 PT6445 PT6446 PT6447
80
70
PT6442 PT6443 PT6444 PT6445 PT6446 PT6447
Efficiency - %
60
Efficiency - %
60
50 0 1 2 3 4 5 6
50 0 1 2 3 4 5 6
Iout (A)
Iout (A)
Ripple Vs Output Current
60 60 50 50
Ripple Vs Output Current
Ripple - mV
Ripple - mV
40
30
20
PT6446 PT6443 PT6444 PT6442 PT6445 PT6441 PT6447
40
30
20
PT6446 PT6447 PT6445 PT6444 PT6443 PT6442
10
10
0 0 1 2 3 4 5 6
0 0 1 2 3 4 5 6
Iout (A)
Iout (A)
Power Dissipation Vs Output Current
2. 5 2. 5
Power Disspiation Vs Output Current
2
2
Pd - Watts
1. 5
1
PT6441/2 PT6443/4 PT6445/6 PT6447
Pd - Watts
1. 5
1
PT6442/3/4 PT6445/6 PT6447
0. 5
0. 5
0 0 1 2 3 4 5 6
0 0 1 2 3 4 5 6
Iout (A)
Iout (A)
Safe Operating Area Curves
PT6440 Series, VIN =5.0V
90.0 80.0
(See Note B)
Safe Operating Area Curves
PT6440 Series, VIN =3.3V
90.0 80.0
(See Note B)
Ambient Temperature (°C)
70.0 60.0 50.0 40.0 30.0 20.0 0. 0 1. 0 2. 0 3. 0 4. 0 5. 0 6. 0
Ambient Temperature (°C)
Airflow 200LFM 120LFM 60LFM Nat conv
70.0 60.0 50.0 40.0 30.0 20.0 0. 0 1. 0 2. 0 3. 0 4. 0 5. 0 6. 0
Airflow 200LFM 120LFM 60LFM Nat conv
Iout (A)
Iout (A)
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures
For technical support and more information, see inside back cover or visit www.ti.com
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