Purchase LTC3827, In-stock LTC3827 From SeekIC.
Part Number: LTC3827
Description: The LTC®3827 is a high performance dual step-down switching regulator controller that drives all N...
- Table of contents:
LTC3827
-
Suppliers
DataSheet
General Description
LTC3827 General Description
The LTC®3827 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 650kHz. Power loss and noise due to the ESR of the input capacitor ESR are minimized by operating the two controller output stages out of phase.
The 80µA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3827 features a precision 0.8V reference and a power good output indicator. A wide 4V to 36V input supply range encompasses all battery chemistries.
Independent TRACK/SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
The PLLIN/MODE pin selects among Burst Mode operation, pulse skipping mode, or continuous inductor current mode at light loads. For a leaded package version (28-lead SSOP), see the LTC3827-1 datasheet.
LTC3827 Maximum Ratings
Input Supply Voltage (VIN)...................................36V to 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2)..............................................42V to 0.3V
Switch Voltage (SW1, SW2) ...................................36V to 5V
(BOOST1-SW1), (BOOST2-SW2) .........................8.5V to 0.3V
RUN1, RUN2 ......................................................... 7V to 0.3V
SENSE1+, SENSE2+, SENSE1,
SENSE2 Voltages .............................................11V to 0.3V
PLLIN/MODE, PLLLPF, Voltages .................... INTVCC to 0.3V
PHASMD, FOLDDIS, TRACK/SS1, TRACK/SS2
Voltages ....................................................... INTVCC to 0.3V
EXTVCC ...............................................................10V to 0.3V
ITH1, ITH2, VFB1, VFB2 Voltages .......................2.7V to 0.3V
PGOOD1, PGOOD2 Voltages.............................. 8.5V to 0.3V
Peak Output Current <10µs (TG1, TG2, BG1, BG2) .............. 3A
INTVCC Peak Output Current .......................................... 50mA
Operating Temperature Range (Note 2) ....... 40°C to 85°C
Junction Temperature (Note 3) ..................................... 125°C
Storage Temperature Range ....................... 65°C to 125°C
LTC3827 Features
Wide Output Voltage Range: 0.8V VOUT 10V
Low Operating IQ: 80µA (One Channel On)
Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
OPTI-LOOP® Compensation Minimizes COUT
±1% Output Voltage Accuracy
Wide VIN Range: 4V to 36V Operation
Phase-Lockable Fixed Frequency 140kHz to 650kHz
Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads
Dual N-Channel MOSFET Synchronous Drive
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Output Current Foldback Limiting
Power Good Output Voltage Monitor
Output Overvoltage Protection
Low Shutdown IQ: 8µA
Internal LDO Powers Gate Drive from VIN or VOUT
Small 5mm * 5mm QFN Package
Low Operating IQ: 80µA (One Channel On)
Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
OPTI-LOOP® Compensation Minimizes COUT
±1% Output Voltage Accuracy
Wide VIN Range: 4V to 36V Operation
Phase-Lockable Fixed Frequency 140kHz to 650kHz
Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads
Dual N-Channel MOSFET Synchronous Drive
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Output Current Foldback Limiting
Power Good Output Voltage Monitor
Output Overvoltage Protection
Low Shutdown IQ: 8µA
Internal LDO Powers Gate Drive from VIN or VOUT
Small 5mm * 5mm QFN Package
LTC3827 Typical Application
Automotive Systems
Battery-Operated Digital Devices
Distributed DC Power Systems
Battery-Operated Digital Devices
Distributed DC Power Systems
LTC3827 Connection Diagram
LTC3827
PDF/DataSheet Download
- Datasheet: LTC3827
- File Size: 548278 KB
- Manufacturer: Linear
- Click here to Download
- ·LTC0157
- ETC [ETC]
- TOROIDAL COIL TRANSFORMER
- 163926 KB
- ·LTC0485
- ETC [ETC]
- Telecamere colori ad alte prestazioni
- 590993 KB
- ·LTC048510
- ETC [ETC]
- Telecamere colori ad alte prestazioni
- 590993 KB
- ·LTC048520
- ETC [ETC]
- Telecamere colori ad alte prestazioni
- 590993 KB
- ·LTC048550
- ETC [ETC]
- Telecamere colori ad alte prestazioni
- 590993 KB
- ·LTC048560
- ETC [ETC]
- Telecamere colori ad alte prestazioni
- 590993 KB
- ·LTC1040
- LINER [Linear Technology]
- Dual Micropower Comparator
- 1018015 KB
- ·LTC1040C
- LINER [Linear Technology]
- Dual Micropower Comparator
- 1018015 KB
LTC3827 Relative Products
LTC3826IUH#TRPBF
IC CTRLR STP-DWN SYNC 2PH 32-QFN
LTC3826IUH#PBF
IC CTRLR STP-DWN SYNC 2PH 32-QFN
LTC3826IG-1#TRPBF
IC CNTRLR SYNC DUAL 28-SSOP
LTC3826IG-1#PBF
IC CNTRLR SYNC DUAL 28-SSOP
LTC3826EUH#TRPBF
IC CNTRLR STP DWN SYNC 32-QFN
LTC3826EUH#PBF
IC CNTRLR STP DWN SYNC 32-QFN
Hotspot Suppliers Product
BUK417-500AE
Price: 16-30 USD
N-channel enhancement mode field-effect power transistor, ISOTOP envelope, 500V
ECE-T1JP123EA
Price: 1-1.5 USD
aluminum electrolytic capacitor, DIP, 16 to 250VDC, 1200 to 180000μF, Can vent construction
DS1991L+F5
Price: 3.6-3.8 USD
DS1991L-F5 - MultiKey iButton - Dallas Semiconductor
OP220AJ
Price: 0.1-50 USD
dual operational amplifier, ±18 V, 150 μV, 2000 V/mV, 12nA
SP4412CN
Price: 0.001-1 USD
Electroluminescent Lamp Driver, SOP, 2.2 V to 3.6 V Battery Operation
AD712TQ
Price: 3.8-5.5 USD
operational amplifier, CDIP8, ±18V
GP2Y0A21YK0F
Price: 3-6 USD
Distance Measuring Sensor Unit, Analog output type, Consumption current 30mA, GP2Y0A21YK0F
LM2596SX-5.0+
Price: 2.15-2.92 USD
5V, 150 kHz, 3A, Step-Down Voltage Regulator, TO263, LM2596SX-5.0+
X5325S8IZT1
Price: 0.1-3 USD
CPU Supervisor, 4.5V to 5.5V, 280ms, 32K, 8-SOIC, 2MHz, 5mA, X5325S8IZT1
5175475-5
Price: 2.6-3.1 USD
Board-to-Board Connector, 250 VAC, 1 A, 5175475-5, TYCO
74HC04A
Price: 0.1-2 USD
sop, Hex Inverter, Gate CMOS
M30300SAGP
Price: 1.89-2.58 USD
QFP, MITSUBISHI Electronics, Integrated Circuits, M30300SAGP
