MT3608

ABSOLUT€ MAXIMUM RATINGS (Note 1)

Manufacturer

unknown

Overview

Part: MT3608

Type: Current Mode Step-Up Converter

Key Specs:

  • Input Voltage: 2V to 24V
  • Switching Frequency: 1.2MHz
  • Switch Current Limit: 4A
  • Output Voltage: Up to 28V
  • Efficiency: Up to 93%
  • Integrated MOSFET On-Resistance: 80mΩ

Features:

  • Integrated 80mΩ Power MOSFET
  • 2V to 24V Input Voltage
  • 1.2MHz Fixed Switching Frequency
  • Internal 4A Switch Current Limit
  • Adjustable Output Voltage
  • Internal Compensation
  • Up to 28V Output Voltage
  • Automatic Pulse Frequency Modulation Mode at Light Loads
  • up to 93% Efficiency
  • Available in a 6-Pin SOT23-6 Package

Applications:

  • Battery-Powered Equipment
  • Set-Top Boxed
  • LCD Bais Supply
  • DSL and Cable Modems and Routers
  • Networking cards powered from PCI or PCI express slots

Package:

  • SOT23-6

Features

  • Integrated 80mΩ Power MOSFET
  • 2V to 24V Input Voltage
  • 1.2MHz Fixed Switching Frequency
  • Internal 4A Switch Current Limit
  • Adjustable Output Voltage
  • Internal Compensation
  • Up to 28V Output Voltage
  • Automatic Pulse Frequency Modulation Mode at Light Loads
  • up to 93% Efficiency
  • Available in a 6-Pin SOT23-6 Package

Applications

  • Battery-Powered Equipment
  • Set-Top Boxed
  • LCD Bais Supply
  • DSL and Cable Modems and Routers
  • Networking cards powered from PCI or PCI express slots

Pin Configuration

Pin NamePin NumberDescription
SW1Power Switch Output. SW is the drain of the internal MOSFET switch. Connect the power inductor and output rectifier to SW. SW can swing between GND and 28V.
GND2Ground Pin
FB3Feedback Input. The FB voltage is 0.6V. Connect a resistor divider to FB.
EN4Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input turns it off. When not used, connect EN to the input supply for automatic startup.
VIN5Input Supply Pin. Must be locally bypassed.
NC6No Connect

Electrical Characteristics

$(V_{IN}=V_{FN}=5V,T_A=25^{\circ}C, \text{ unless otherwise noted.})$

PARAMETERCONDITIONSMINTYPMAXUNIT
Operating Input VoltageCONDITIONS211124V
Under Voltage Lockout1.98V
Under Voltage Lockout1.00, v
Hysteresis100mV
Current (Shutdown)$V_{FN} = 0V$0.11μΑ
Quiescent Current (PFM)$V_{EB} = 0.7V$ , No switch100200$\mu$ A
Quiescent Current (PWM)$V_{FB} = 0.5V$ , switch1.62.2mA
Switching FrequencyVER-0.009 SWITCH1.2L. LMHz
Maximum Duty Cycle$V_{FB} = 0V$901.2%
EN Input High VoltageAFR OA1.5V
EN Input Low Voltage1.00.4V
FB Voltage0.5880.60.612V
FB Input Bias Current$V_{FB} = 0.6V$-50-100.012nA
SW On ResistanceAFB — 0.0A0080150mΩ
SW Current LimitV IN = 5V, Duty cycle=50%4100A
SW Leakage$V_{SW} = 20V$71
Thermal ShutdownV SW — ZUV155ıμA
°C
THEITHAL SHULUUWH100C

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.

Note 2: $T_J$ is calculated from the ambient temperature $T_A$ and power dissipation $P_D$ according to the following formula: $T_J = T_A + (P_D) x$ (250°C/W).

Note 3: 100% production test at 25°C. Specifications over the temperature range are guaranteed by design and characterization.

Absolute Maximum Ratings

VIN,EN voltages0.3V to 26VJunction Temperature(Note2)160°C
FB Voltages0.3V to 6VOperating Temperature Range40°C to 85°C
SW Voltage0.3V to 30VLead Temperature(Soldering,10s)300°C
Power Dissipation0.6WStorage Temperature Range65°C to 150°C
Thermal Resistance $\theta_{JC}$130°C/WESD HBM(Human Body Mode)2kV
Thermal Resistance $\theta_{JA}$250°C/WESD MM(Machine Mode)200V
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