LM2599-3.3

The LM2599-3.3 is one member of the LM2599 family which is designed as the SIMPLE SWITCHER® power converter 150 kHz 1A step-down voltage regula-tor. This device can be used in (1)simple high-efficiency step-down (buck) regulator; (2)efficient pre-regulator for linear regulators; (3)on-card switching regulators; (4)positive to negative convertor. And also it operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.

Features of the LM2599-3.3 are:(1)3.3V, 5V, 12V, and adjustable output versions; (2)adjustable version output voltage range, 1.2V to 37V (57V for the HV version)±4% max over line and load conditions; (3)available in 8-pin surface mount and DIP-8 package; (4)guaranteed 0.5A output current; (5)input voltage range up to 40V; (6)requires only 4 external components; (7)150 kHz fixed frequency internal oscillator; (8)TTL Shutdown capability; (9)low power standby mode, IQ typically 80 A; (10)high efficiency ; (11)uses readily available standard inductors; (12)thermal shutdown and current limit protection.

The absolute maximum ratings of the LM2599-3.3 can be summarized as:(1)maximum supply voltage:45 V;(2)delay pin voltage:1.5 V;(3)feedback pin voltage:-0.3 </= V </= +25V;(4)output voltage to ground (steady state):-1 V;(5)power dissipation:internally limited;(6)storage temperature range:-65°C to +150°C;(7)ESD susceptibility human body model:2 kV;(8)maximum junction temperature:+150°C. If you want to know more information such as the electrical characteristics about the LM2599-3.3, please download the datasheet in www.seekic.com or www.chinaicmart.com .