Zilog IXD3235A12CMR-G

The IXD3235/36/37 series is a group of synchronous rectification type DC/DC converters with a built-in 0.52 Ω N-channel synchronous rectification transistor and 0.42 Ω P-channel switching transistor providing up to 600 mA output current. Operating voltage range is from 2.0 V to 6.0 V (A - C types) or 1.8 V to 6.0 V (D - G types). For the D/F types, which have a reference voltage of 0.8 V with ± 2.0% accuracy, the output voltage can be set from 0.9 V by using two external resistors. The A/B/C/E/G types have a fixed output voltage from 0.8 V to 4.0 V in increments of 0.05 V with ± 2.0% accuracy. The device requires only an inductor and two externally connected ceramic capacitors. The built-in oscillator, either 1.2 MHz or 3.0 MHz, can be selected. The IXD3235 operates in PWM mode, the IXD3236 automatically switches between PWM/PFM modes, and the IXD3237 allows switch manually between the PWM and the automatic PWM/PFM switching control modes. This allows fast response, low ripple, and high efficiency over the full range of loads from light to heavy. The soft start and current control functions are internally optimized. All circuits are disabled in a standby mode to reduce current consumption to less than 1.0 μA. The B/F/G types have a 0.25 ms high - speed soft start for quick turn - on. The built - in Under Voltage Lockout (UVLO) function forces the internal P - channel transistor OFF, when input voltage becomes 1.4 V or lower. The B to G types have the output capacitor CL discharge circuitry, which allows fast CL discharge when IC goes into standby mode. Device is available in four types of packages: SOT25, USP - 6C, USP - 6EL, and WLP - 5 - 03.

• Built-in transistors
• Operating Input Voltage Range: 2.0 V ~ 6.0 V (A/B/C types) or 1.8 V ~ 6.0 V (D/E/F/G types)
• Output Voltage Range Externally Set: 0.8 V ~ 4.0 V (internally set) or 0.9 ~ 6.0 V (externally set)
• Output Current: 600 mA
• High Efficiency: 92%
• Oscillation Frequency: 1.2 MHz, 3 MHz
• Maximum Duty Cycle: 100%
• Operating Modes: PWM, PWM/PFM auto select or PWM/PFM manual select
• Functions: Build-in Current Limit, Load Capacitor Discharge, High Speed Soft start
• Operating Ambient temperature: -40 ~ +85 °C
• Packages: SOT-25, USP-6C, USP-6EL, WLP-5-03
• EU RoHS Compliant, Pb Free

• Mobile Phones
• Bluetooth headsets
• Digital home appliances
• Office automation equipment
• Various portable equipment