uba20261 NXP Semiconductors, uba20261 Datasheet - Page 3

• Manufacturer Part Number: uba20261
• Description: 600 V And 350 V Power Ic For Step Dimmable Cfls
• Manufacturer: NXP Semiconductors

Fig 1.
SGND 15
CB 14
CP
13
Block diagram
REFERENCE
BOOST TIMER
1 μA
CURRENT
PREHEAT/
1.27 V
V
6
SUPPLY
DD
+ -
5 V DIGITAL MEMORY
5 V DIGITAL
5 V ANALOG
25 μA
7
RREF
6 μA
+
-
REFERENCE
VOLTAGES
CONTROLLED OSCILLATOR
60 μA
+
-
+
-
V
I
V
DD(stop)
RESET
5 V
VOLTAGE
CF
8
+
-
DIMMER
LOGIC
STEP
TEMPERATURE
160° 120° 80°
FREQUENCY
SENSOR
CONTROL
LOGIC
POWER-DOWN STATE
START-UP STATE
PREHEAT STATE
IGNITION STATE
BOOST STATE
RESET STATE
STATE LOGIC
HOLD STATE
BURN STATE
DIVIDE BY 2
LOGIC
CI
10
CURRENT
SENSOR
OTA
LAMP
+
-
AMPLIFIER
DRIVER
LOGIC
BOOST
BOOTSTRAP
4
DSR
11
CSI
V clamp(CSI)
SHIFTER
Q
LEVEL
2
A
Q
B
IGNITION CURRENT DETECTOR
CAPACITIVE MODE DETECTOR
V MDL
V DIM_3
V DIM_2
V DIM_1
PREHEAT CURRENT SENSOR
OVERCURRENT DETECTOR
INDUCTOR SATURATION/
25 μA
STEP DIM LEVEL SELECT
9
MDL
HS driver
LS driver
+
+
-
-
+
+
-
-
V th(capm)SLS
V th(det)ign(CSI)
V ph(SLS)
GHS
V th(ocp)SLS
GLS
16
12
001aam982
18
17
19
20
1
2
3
4
5
FS
DHS
HBO
HBO
HBO
SLS
SLS
SLS
LSAT
PGND
n.c.