Free hotline:
86-755-88844016
+852 2632 9637
Image shown is a representation only.
Exact specifications should be obtained from the product data sheet.
Professional supply Integrated circuit IC LTC7149EUFD PBF Buck Switching Regulator IC Negative Adjustable 0V 1 Output 4A 28WFQFN
Conv DC-DC 3.4V to 60V Synchronous Step Down Single-Out 0V to -28V 4A 28-Pin QFN EP Tube
Product Descriptions
The LTC®7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistorprogrammable output voltage and high efficiency over a wide VOUT range.
The inverting regulator operates from an input voltage range of 3.4V to 60V and provides an adjustable output from (–28V) to zero volts while delivering up to 4A of inductor current. The switching frequency is also set with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to synchronize the switching frequency to an external clock. Internal level-shift circuits allow the I/O pins (RUN, MODE/SYNC, PGOOD) to be referenced to board GND.
The LTC7149 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection.
Product Features
• Wide VIN Range: 3.4V to 60V
• Wide VOUT Range: 0V to –28V
• Single Resistor VOUT Programming
• Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
• Regulated IQ: 440µA, Shutdown IQ: 15µA
• Board GND Referenced I/O Pins (RUN, PGOOD, MODE/SYNC)
• Accurate Resistor Programmable
Frequency (300kHz to 3MHz) with ±50%
Frequency Sync Range
• 92% Efficiency with 12 VIN and –5VOUT
• ±0.8% Output Voltage Accuracy
• Peak Current Mode Operation
• Burst Mode® Operation, Forced Continuous Mode
• Programmable Soft-Start
• Overtemperature Protection
• Available in 28-Lead (4mm x 5mm) QFN and TSSOP Packages
Product Applications
• Industrial Applications
• Telecom Power Supplies
• Distributed Power Systems
Specifications
Attribute |
Attribute value |
ANSM-Part# |
ANSM-LTC7149EUFD#PBF |
Category |
Integrated Circuits (ICs) |
Power Management (PMIC) |
|
Voltage Regulators - DC DC Switching Regulators |
|
Mfr |
Analog Devices Inc. |
Series |
- |
Package |
Tube |
Product Status |
Active |
Function |
Step-Down |
Output Configuration |
Negative |
Topology |
Buck |
Output Type |
Adjustable |
Number of Outputs |
1 |
Voltage - Input (Min) |
3.4V |
Voltage - Input (Max) |
60V |
Voltage - Output (Min/Fixed) |
0V |
Voltage - Output (Max) |
-28V |
Current - Output |
4A |
Frequency - Switching |
1MHz |
Synchronous Rectifier |
Yes |
Operating Temperature |
-40°C ~ 125°C (TJ) |
Mounting Type |
Surface Mount |
Package / Case |
28-WFQFN Exposed Pad |
Supplier Device Package |
28-QFN (4x5) |
Base Product Number |
LTC7149 |
Actual product photos
Product Data Book:
For more product information, please download the PDF
Payment&Transportation
Official Certificate&Certificate
Multiple product supply
Company office environment
Warehouse Real Shot
Standard packaging
We also provide :
Part No | Manufacturer | Date Code | Quantity | Description |
LM22676ADJ | NS | 19+ | 250 | SOP8 |
TPS562201DDCR | TI | 22+ | 795500 | SOT23-6 |
NJG1806K75 | JRC | 22+ | 500000 | DFN6 |
TLV74318PDQNR | TI | 22+ | 402000 | X2SON-4 |
NJG1801K75 | JRC | 22+ | 300000 | SMD |
NJG1804K64 | JRC | 22+ | 300000 | DFN8 |
LM27761DSGR | TI | 22+ | 151000 | WSON8 |
TLV62565DBVR | TI | 22+ | 138000 | SOT23-5 |
TPS613222ADBVR | TI | 22+ | 108000 | SOT23-5 |
LNK625DG-TL | POWER | 22+ | 100000 | SOP-8 |
OPA4322AIPWR | TI | 22+ | 100000 | TSSOP14 |
TLV75528PDRVR | TI | 22+ | 99000 | WSON-6 |
TPS7A2025PDQNR | TI | 22+ | 78500 | X2SON-4 |
TLV62568DBVR | TI | 22+ | 72000 | SOT23-5 |
STM32L051K8U6TR | ST | 22+ | 60000 | QFN32 |
SKY66421-11 | SKYWORKS | 22+ | 56500 | QFN16 |
TPS7A1111PDRVR | TI | 22+ | 54000 | WSON6 |
TLV62569PDDCR | TI | 22+ | 52000 | SOT23-6 |
TLV62569DBVR | TI | 22+ | 48000 | SOT23-5 |
TPS23753APWR | TI | 22+ | 40000 | TSSOP14 |
NB691GG-Z | MPS | 22+ | 30000 | QFN |
SN74AHC1G02DBVR | TI | 22+ | 27939 | SOT-23 |
TPS63000DRCR | TI | 22+ | 23238 | VSON10 |
TLV75533PDRVR | TI | 22+ | 21500 | WSON6 |
NB687BGQ-Z | MPS | 22+ | 20000 | QFN |
A3916GESTR-T-1 | ALLEGRO | 22+ | 17150 | QFN-20 |
TPS62135RGXR | TI | 22+ | 15000 | VQFN11 |
TLE2022AMDR | TI | 0803+ | 12500 | SOP8 |
TPS23756PWPR | TI | 22+ | 12000 | HTSSOP-20 |