DATASHEET S
D FOR NEW DESIGN
NOT RECOMMENDE
UTE PRODUCT
POSSIBLE SUBSTIT
ISL9106
(NOT PIN-FOR-PIN) EL7530 FN7434
Rev 6.00
July 12, 2006 Monolithic 600mA Step-Down Regulator with Low Quiescent Current
The EL7530 is a synchronous, integrated FET 600mA stepdown regulator with internal compensation. It operates with an
input voltage range from 2.5V to 5.5V, which accommodates
supplies of 3.3V, 5V, or a Li-Ion battery source. The output can
be externally set from 0.8V to VIN with a resistive divider.
The EL7530 features automatic PFM/PWM mode control, or
PWM mode only. The PWM frequency is typically 1.4MHz
and can be synchronized up to 12MHz. The typical no load
quiescent current is only 120ВµA. Additional features include
a Power-Good output, 2.5V) forces the converter into
PWM mode in the next switching cycle regardless of output
current. The duration of the transition varies depending on the
output current. Figures 22 and 23 (under two different loading
conditions) show the device goes from PFM to PWM mode.
Note: In Forced PWM mode, the IC will continue to start-up …
