AVR 171 (serv.man3) - Harman Kardon Audio Service Manual (repair manual). Page 98

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DB1510B 
1A, 0.8V Dropout LDO Regulator 
Datasheet AT1510BF-01 
9. Nov. 2009 
1 of 8
 
DESCRIPTION 
The DB1510B low-dropout linear regulator 
operates from input voltages as low as 2.2V and 
are able to deliver up to 1A of continuous output 
current the DB1510B offers low dropout (typically 
800mV at 1A) and low quiescent current (typically 
400uA at 0.1A). 
Fixed output voltages of the DB1510B are 1.0V, 
1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.3V & 3.5V and the 
output voltage is 2% accurate over load and line 
variations. These regulators use small 2.2μF 
MLCC input capacitor and 4.7μF MLCC output 
capacitors to deliver 1A output current.   
Soft-start reduces inrush current. The other 
features include over current protection (OCP), 
short-circuit protection (SCP), and thermal shut 
down protection (TSD). 
The DB1510B is packaged SOT-223, TO-252 & 
8-pin thin dual flat no lead (TDFN) package that a 
heat sink or an exposed pad for optimal power 
dissipation. 
FEATURES 
„
  Input Voltage Range: 2.2V to 6.0V 
„
  Quiescent Current: Typ. 400uA 
„
  Current limit : Min. 1.2A 
„
  Dropout Voltage: Typ. 800mV @ 1A 
„
  Compatible with MLCC Capacitors 
„
  Soft-Start Limits Inrush Current 
„
  Thermal Shutdown Protection 
„
  Over Current & Short Circuit Protection 
APPLICATIONS 
„
 Servers 
„
 Storage 
„
 Networking 
„
 Optical 
Modules 
„
 Post 
Regulators 
„
 Notebooks 
„
 PDA 
ORDERING INFORMATION 
PART NUMBER 
PACKAGE 
DB1510BT3TRxx
NOTE1)
 TO-252 
(I) 
DB1510BT32TRxx
NOTE1)
 TO-252 
(II) 
DB1510BNNTRxx
NOTE1)
 SOT-223 
(I) 
DB1510BNN2TRxx
NOTE1)
 SOT-223 
(II) 
DB1510BDLTRxx
NOTE1)
 8-TDFN 
(3x3) 
NOTE1)  xx: Voltage Code, 1.0V (10), 1.2V (12), 1.5V (15), 
1.8V (18), 2.5V (25), 2.8V (28), 3.3V (33) & 3.5V (35)
 
TYPICAL APPLICATION 
3-Lead Application Circuit                     Power Supply Ripple Rejection
 
8-TDFN (3x3) Application Circuit 
 
DONGBU 
HITEK 
CONFIDENTIAL
Harman Kardon
AVR 171 Service Manual
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