TEA1532
Philips Semiconductors
GreenChip II SMPS control IC
5. Block diagram
8
1
SUPPLY
MANAGEMENT
START-UP
CURRENT SOURCE
V
CC
DRAIN
I
prot(dem)
DCM
AND
CCM
VALLEY
internal UVLO start
supply
clamp
V
m
DETECTION
S1
2
GND
5
DEM
OSCILLATOR
LOGIC
80
mV
SLOPE
COMPENSATION
−50
mV
DRIVER
Osc_Rdy
Duty_Max
7
LOGIC
DRIVER
I
slopecomp
I
4
ss
CTRL
−1
0.5 V
LEB
POWER-ON
RESET
S
R
Q
Q
soft
start
S2
blank
5.6 V
UVLO
OCP
control
detect
MAXIMUM
ON-TIME
PROTECTION
6
0.63 V
SENSE
BROWN-OUT
PROTECTION
DCM and CCM
S3
2.5 V
I
charge
3
PROTECT
S
R
Q
Q
TEA1532T
TEA1532P
300 Ω
5.6 V
OVER-
TEMPERATURE
PROTECTION
I
discharge
protect
detect
V
< 4.5 V
CC
3 V
coa014
Fig 1. Block diagram.
9397 750 13113
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Preliminary data sheet
Rev. 01 — 28 May 2004
3 of 27
NXP [ NXP ]
