ILC6370 Datasheet, PDF (1/8 Pages) Impala Linear Corporation – SOT-89 STEP UP SWITCHING REGULATOR WITH SHUTDOWN

Impala Linear Corporation
ILC 6370/71
SOT-89 Step up Switching Regulator with Shutdown
General Description
50mA boost converter in 5-lead SOT-89 package. Only 3
external components are needed to complete the switcher
design, and frequency options of 50, 100, and 180kHz gives
the designer the ability to trade off system needs with
switcher design size.
87% max duty cycle gives conversion efficiencies of 85%.
Standard voltage options of 2.5V, 3.3V, and 5.0V at ±2.5%
accuracy feature on-chip phase compensation and soft-
start design.
ILC6371 drives an external transistor for higher current
switcher design, with all of the features and benefits of
the ILC6370.
Features
! 85% efficiency at 50mA
! Start-up voltages as low as 900mV
! ±2.5% accurate outputs
! Complete switcher design with only 3 external components
! 50, 100 and 180kHz switching frequency versions available
! Shutdown to 0.5µA
! External transistor option allows several hundred milliamp
switcher design
Applications
! Cellular Phones, Pagers
! Portable Cameras and Video Recorders
! Palmtops and PDAs
Block Diagram
LX
VSS
EXT
CE
VL X LIMI TER
BU FFER
P WM Co ntrol led
OSC
50/ 100/180KHz
Slow Start
Vre f
P hase com p
V_DD
-
CHIP ENABLE
+
V DD is i nternall y connected to the VO UT pi n.
V_OUT
Pin-Package Configurations
V_SS
L_X
5
4
SOT -89-5
(TOP VI EW)
1
2
3
N/C ^VO UT ^CE
ILC6370
V_{S S}
EXT
5
4
SOT -89-5
(TOP VI EW)
1
2
3
N/C ^VO UT ^CE
ILC6371
Ordering Information*
ILC6370CP-25
2.5V±2.5%@50kHz
ILC6370CP-25
3.3V±2.5%@50kHz
ILC6370CP-50
5.0V±2.5%@50kHz
ILC6370BP-25
2.5V±2.5%@100kHz
ILC6370BP-33
3.3V±2.5%@100kHz
ILC6370BP-50
5.0V±2.5%@100kHz
ILC6370AP-25
2.5V±2.5%@180kHz
ILC6370AP-33
3.3V±2.5%@180kHz
ILC6370AP-50
5.0V±2.5%@180kHz
ILC6371CP-25
2.5V±2.5%@50kHz, external xtor
ILC6371CP-33
3.3V±2.5%@50kHz, external xtor
ILC6371CP-50
5.0V±2.5%@50kHz, external xtor
ILC6371BP-25
2.5V±2.5%@100kHz, external xtor
ILC6371BP-33
3.3V±2.5%@100kHz, external xtor
ILC6371BP-50
5.0V±2.5%@100kHz, external xtor
ILC6371AP-25
2.5V±2.5%@180kHz, external xtor
ILC6371AP-33
3.3V±2.5%@180kHz, external xtor
ILC6371AP-50
5.0V±2.5%@180kHz, external xtor
Standard Product offering comes in tape and reel,
quantity 1000 per reel, orientation right for SOT-89
Impala Linear Corporation
ILC6370/1 1.3
[phone] www.impalalinear.com
July 1999 1