this is information on a product in full production. october 2014 docid023965 rev 7 1/24 24 ldk120 200 ma low quiescent current very low noise ldo datasheet - production data features ? input voltage from 1.9 to 5.5 v ? very low dropout voltage (100 mv typ. at 100 ma load) ? low quiescent current (max. 100 a, 1 a in off mode) ? very low noise ? output voltage tolerance: 2.0% @ 25 c ? 200 ma guaranteed output current ? wide range of fixed output voltages available on request: from 0.8 v to 3.5 v with 100 mv step ? adjustable version: from 0.8 v to v in -v drop ? logic-controlled electronic shutdown ? compatible with ceramic capacitor c out = 1 f ? internal current and thermal limit ? available in sot23-5l, sot323-5l and dfn6 (1.2 x 1.3 mm) packages ? temperature range: -40 c to 125 c applications ? mobile phones ? personal digital assistants (pdas) ? cordless phones and similar battery-powered systems ? digital still cameras description the ldk120 low drop voltage regulator provides 200 ma of maximum current from an input supply voltage in the range of 1.9 v to 5.5 v, with a typical dropout voltage of 100 mv. it is stabilized with a ceramic capacitor on the output. the very low drop voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications. an enable logic control function puts the ldk120 in shutdown mode allowing a total current consumption lower than 1 a. the device also includes a short-circuit constant current limiting and thermal protection. 6 2 7 / 6 2 7 / ' ) 1 [ p p www.st.com
contents ldk120 2/24 docid023965 rev 7 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 9 order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
docid023965 rev 7 3/24 ldk120 diagram 1 diagram figure 1. block diagram
pin configuration ldk120 4/24 docid023965 rev 7 2 pin configuration figure 2. pin connection (top view) table 1. pin description (sot23-5l, sot323-5l) pin symbol function sot23/ sot323 dfn6 fixed adjustable d version 1 6 in input voltage of the ldo 2 2 gnd common ground 3 4 en enable pin logic input: low = shutdown, high = active 43 byp (1) /adj /nc 1. bypass capacitor for noise reduction on fixed version is optional, if not used the relevant pin must be left floating with no routing on the board. bypass capacitor adjustable pin internally not connected 5 1 out output voltage of the ldo - 5 n/c not connected. this pin should be connected to gnd sot23-5l, sot323-5l dfn6 (1.2 x 1.3) # : 1 " % + / $
docid023965 rev 7 5/24 ldk120 typical application 3 typical application figure 3. typical application circuits for fixed version figure 4. typical application circuits for d version figure 5. typical application circuits for adjustable version , 1 2 8 7 ( 1 * 1 ' % < |