Philips Semiconductors
Vi
Vi
VDRAIN
TEA1532
GreenChip™II SMPS control IC
VO
Vstart
VCC
VUVLO
VDRIVER
VPROTECT(1)
2.5 V
Start-up
sequence
Normal
operation
External
OTP
001aaa841
(1) When VPROTECT is forced above 3 V, the protection is always latched. So the IC is not started at
Vstart unless the VCC voltage drops below the VCC(reset) level. This is the same action used for
external OTP compensation described in Section 7.15.
Fig 12. Typical waveforms 2.
9397 750 13113
Preliminary data sheet
Rev. 01 — 28 May 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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