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Part Number: LM2619

 

 

 

 

Description: The LM2619 step down DC-DC converter is optimized for powering circuits from a single Lithium-Ion cell. It steps dow...


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LM2619 General Description


The LM2619 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 device 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 60A (typ.). Shutdown mode turns the device off and reduces battery consumption to 0.02A (typ.).

  

LM2619 Maximum Ratings

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.)                                                          260°C
Junction Temperature (Note 2)                      −25°C to +125°C
Minimum ESD Rating                                                           ±2 kV
(Human Body Model, C = 100 pF, R = 1.5 k)
Thermal Resistance (JA) (Note 3)                               140°C/W

LM2619 Features

 Sub-miniature 10-bump thin micro SMD package
 Uses small ceramic capacitors
 5mV typ PWM mode output voltage ripple(COUT = 22F)
 Internal soft start
 Current overload protection
 Thermal Shutdown
 External compensation

LM2619 Typical Application

 Mobile Phones
 Hand-Held Radios
 RF PC Cards
 Wireless LAN Cards

LM2619 datasheet

LM2619
PDF/DataSheet Download

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Related Part Number

LM2619 Relative Products

  • LM2618BTLX

    LM2618BTLX

    IC CONV DC/DC PWM/PFM 10MICROSMD

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    IC CONV DC/DC PWM/PFM 10MICROSMD

  • LM2618ATL

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    IC CONV DC/DC PWM/PFM 10MICROSMD

  • LM2618

    LM2618

    The LM2618 step-down DC-DC converter is optimized for powering low voltage circuits from a single Lithium-Ion cell. It provides up to 400mA (300mA for B grade), over an input voltage range of 2.8V to 5.5V. Pin programmable output voltages of 1.80V, 1.83V, 1....

  • LM2614BTL

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