IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (140)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (267)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (337)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (97)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (58)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
Analog Devices LTC7811 | Demoboard DC3151A
LTC7811 | Triple Output Step-Up/Dual Step-Down Power Supply
Overview
| Topology | Boost Converter |
| Input voltage | 4.5-36 V |
| Output 1 | 9.5 V / 7 A |
Description
Demonstration circuit DC3151A is a non-synchronous boost plus dual synchronous buck power supply featuring the LTC7811. The demonstration circuit is designed for two buck outputs 5V/10A, 3.3V/7A supplied by a boosted 9.5V output. Benefiting from this feature, the buck outputs can maintain regulation over a wide input voltage range of 4.5V to 36V which is suitable for automotive or other battery fed applications. Also, the demonstration circuit uses a drop-in layout whereas the main buck circuit components fit in an area of ¾" by 1½", while the main boost circuit area is ¾" by 1¾". The package style for the LTC7811 is a 40-pin exposed pad QFN.The main features of the board include rail tracking (Buck channels only), an internal 5V linear regulator for bias, separate RUN pins for each output, a PGOOD signal (CH1 only), battery monitor and a Mode selector that allow the converter to run in CCM, Pulse-skipping or Burst Mode operation. Spread Spectrum Mode is available for EMI improvement. Synchronization to an external clock is also possible.The LTC7811 datasheet gives a complete description of this part, its operation and application information. The datasheet must be read in conjunction with the quick start guide for demo circuit 3151.
Features
- Dual Synchronous Buck Plus Single Boost Controllers
- Low Operating IQ:
- 14μA (14V to 3.3V, Channel 1 On)
- Outputs Remain in Regulation Through Cold Crank Down to 1V Input Supply Voltage
- Wide Bias Input Voltage Range: 4.5V to 40V
- Buck Output Voltages Up to 40V
- Boost Output Voltage Limited Only by External Components
- Spread Spectrum Operation
- RSENSE or DCR Current Sensing
- Low Battery Indicator for Automotive Applications
- Programmable Fixed Frequency (100kHz to 3MHz)
- Phase-Lockable Frequency (100kHz to 3MHz)
- Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode® Operation at Light Loads
- Boost Channel Current Monitor Output
- Low Shutdown IQ: 1.5μA
- Small 40-Lead 6mm × 6mm QFN Package
- AEC-Q100 Qualified for Automotive Applications
Typical applications
- Industrial
- Military/Avionics
- Automotive and Transportation
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | f(mm) | Pins | Type | Mount | L(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | Length12.7 mm | – | – | Operating Temperature -30 °C up to +85 °C | |||
 | WR-PHD Jumper, –, 2 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | Pins2 | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, 3 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Pins3 | TypeStraight | MountTHT | Length6 mm | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, 6 | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Pins6 | TypeStraight | MountTHT | Length6 mm | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |