Electronic Components Datasheet Search |
|
PT7771N1 Datasheet(PDF) 1 Page - Texas Instruments |
|
PT7771N1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 4 page For technical support and more information, see inside back cover or visit www.ti.com/powertrends Standard Application Cin = Required 2400µF electrolytic Cout = Required 2400µF electrolytic L1 = Optional 1µH input choke 32 Amp “Sledge Hammer” Programmable ISR PT7771—5V The PT7771 is a high-output Inte- grated Switching Regulator (ISR) housed in a 27-pin SIP package. The PT7771 operates off a standard 5V bus to provide a 32 amp low-voltage power source for the industry’s latest high- speed µPs, ASICs, DSPs. The PT7771 has been designed to work in parallel with one or more of the PT7746 -32A current boosters to increase the load current capability in increments of 32A. The output voltage is program- mable from 1.3V to 3.5V via a 5-bit input, compatible with Intel’s Pentiumâ Pro Processor. A differential remote sense is also provided to compensate for voltage drop between the ISR and load. An output capacitance of 2400µF is required for proper operation. Note that this product does not include short circuit protection. For STBY* pin; open = output enabled; ground = output disabled. Pin-Out Information PT7770 7 - 11 13 - 19 20 - 25 27 V IN GND 1H GND V OUT C OUT + C IN + 12 26 1 L1 SYNC OUT LOAD REMOTE SENSE (+) REMOTE SENSE (-) VID1 VID2 VID3 VID4 PROGRAMMING PINS 2 3 4 STBY* 5 6 VID0 Pin Function 1 VID0 2 VID1 3 VID2 4 VID3 5 STBY*- Stand-by 6 VID4 7 V in 8 V in 9 V in 10 V in 11 V in 12 Remote Sense Gnd 13 GND Pin Function 14 GND 15 GND 16 GND 17 GND 18 GND 19 GND 20 Vout 21 Vout 22 Vout 23 Vout 24 Vout 25 Vout 26 Remote Sense Vout 27 Sync Out SLTS054A (Revised 6/30/2000) Specifications Characteristics PT7771 (T a = 25°C unless noted) Symbols Conditions Min Typ Max Units Output Current Io Ta = +60°C, 200 LFM, pkg N 0.1 (1) —32 A Ta = +25°C, natural convection 0.1 (1) —26 A Input Voltage Range Vin 0.1A ≤ Io ≤ 32A 4.5 (2) — 5.5 V Output Voltage Tolerance ∆Vo Vin = +5V, Io = 32A Vo-0.03 — Vo+0.03 V 0°C ≤ Ta ≤ +55°C Line Regulation Regline 4.5V ≤ Vin ≤ 5.5V, Io = 32A — ±10 — mV Load Regulation Regload Vin = +5V, 0.1 ≤ Io ≤ 32A — ±10 — mV Vo Ripple/Noise pk-pk Vn Vin = +5V, Io = 32A — 50 — mV Transient Response ttr Io step between 16A and 32A — 100 — µSec with Cout = 2400µF Vos Vo over/undershoot — 200 — mV Efficiency η Vin = +5V, Io = 20A, Vo = 3.3V — 90 — % Switching Frequency ƒo 4.5V ≤ Vin ≤ 5.5V 650 700 750 kHz 0.1A ≤ Io ≤ 32A Absolute Maximum Ta Over Vin Range 0 — +85 (3) °C Operating Temperature Range Storage Temperature Ts — -40 — +125 °C Weight — Vertical/Horizontal — 53/66 — grams Notes: (1) ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected. (2) The minimum input voltage is 4.5V or Vout +1.2V, whichever is greater. (3) Consult the SOA curves or contact the factory for the appropriate derating. Output Capacitors: The PT7771 regulator requires a minimum output capacitance of 2400µF for proper operation. Do not use Oscon type capacitors. The maximum allowable output capacitance is 30,000µF. Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 32ADC with a typical value of 1µH. The input capacitance must be rated for a minimum of 2.6Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. |
Similar Part No. - PT7771N1 |
|
Similar Description - PT7771N1 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |