The LM2734Z regulator is a monolithic, high-frequency, PWM step-down DCDC converter assembled in a thick 6-pin SOT and a WSON non-pullback package. The device provides all the active functions to provide local DCDC conversion with fast transient response and accurate regulation in the smallest possible PCB area.
With a minimum of external components and online design support through WEBENCH™, the LM2734Z is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for ON-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 85% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734Z uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.
|Part number||Order||Vin (Min) (V)||Vin (Max) (V)||Vout (Min) (V)||Vout (Max) (V)||Iout (Max) (A)||Regulated outputs (#)||Switching frequency (Min) (kHz)||Switching frequency (Max) (kHz)||Iq (Typ) (mA)||Features||Control mode||Duty cycle (Max) (%)||Operating temperature range (C)||Rating||Package Group||Type||Package size: mm2:W x L (PKG)|
Light Load Efficiency
|Current Mode||85||-40 to 125||Automotive||
SOT-23-THIN | 6
WSON | 6
6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)
6WSON: 9 mm2: 3 x 3 (WSON | 6)