LM2619MTC

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
PVIN, VDD to SGND ..................................−0.2V to +6V
PGND to SGND, PVIN to VDD ..................−0.2V to +0.2V
EN, EAOUT, EANEG, SYNC/MODE
to SGND ...................................................−0.2V to +6V
FB, SW (GND −0.2V) to ..............................(VDD +0.2V)
Storage Temperature Range ...........−45°C to +150°C
Lead Temperature
(Soldering, 10 sec.) ...........................................300°C
Junction Temperature (Note 2) ........................+125°C
Ambient Temperature Range ...............-25°C to 85°C
Minimum ESD Rating ...........................................±2 kV
(Human Body Model, C = 100 pF, R = 1.5 k)
Thermal Resistance (_JA) (Note 3) ................110°C/W

The LM2619MTC step down DC-DC converter is optimized for powering circuits from a single Lithium-Ion cell. It steps down an input voltage of 2.8V to 5.5V to an output of 1.5V to 3.6V at up to 500mA. Output voltage is set using resistor feedback dividers.

The LM2619MTC offers three modes for mobile phones and similar portable applications. Fixed-frequency PWM mode minimizes RF interference. A SYNC input allows synchronizing the switching frequency in a range of 500kHz to 1MHz. Low current hysteretic PFM mode reduces quiescent current to 160A (typ). Shutdown mode turns the device off and reduces battery consumption to 0.02A (typ.).

Current limit and thermal shutdown features protect the device and system during fault conditions.

The LM2619MTC is available in a 14 pin TSSOP package. A high switching frequency (600kHz) allows use of tiny surface-mount components.

The device features external compensation to tailor the response to a wide range of operating conditions.