ZCC66099同步升压加LDO 替代SGM66099

Siweidianzi

The ZCC66099 is a synchronous step-up converter
  p9 G9 }( Y2 `: Owith 0.65μA ultra low quiescent current. It is designed
) n# [6 Y1 M/ S+ z. E. Afor products powered by alkaline battery, NiMH
! m1 T1 h% P( n' Grechargeable battery, Li-Mn battery or rechargeable Li-
Ion battery, for which high efficiency under light load
- x1 Z3 Z' ]6 ~& N, Ncondition is critical to achieve long battery life operation.
8 O% }. S9 T& ~The ZCC66099 step-up converter only consumes
/ o5 I/ x3 \* E( p0.65μA quiescent current under light load condition and
/ ]* m8 p. o6 w# |/ Rcan achieve up to 75% efficiency at 10μA load with
fixed output voltage version. It can also support up to
300mA output current from 3.3V to 5V conversion, and
achieve up to 93% at 200mA load.
- C/ w! u5 G7 E6 IThe ZCC66099 also offers both down mode and pass-
7 N0 C  V/ W& a# D6 K- Xthrough operation for different applications. In down
mode, the output voltage can still be regulated at target
9 B1 b# W5 n. _4 x+ evalue even when input voltage is higher than output
+ F3 W% b: N2 m& Dvoltage. In pass-through mode, the output voltage
; n4 p: j, l) {; P- N& i# ~. lfollows input voltage. The ZCC66099 exits down mode
and enters into pass-through mode when VIN > VOUT +
0.3V.
The ZCC66099 supports true shutdown function when
it is disabled, which disconnects the load from the input
supply to reduce the current consumption.
" a  U! \! n  L. T% S- KThe ZCC66099 offers both adjustable output voltage
! Z; c6 p; [/ {- aversion and fixed output voltage versions. It is available
in Green WLCSP-1.22×0.83-6B and TDFN-2×2-6AL
packages.
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