ISL1904FAZ-T Intersil, ISL1904FAZ-T Datasheet - Page 2

• Manufacturer Part Number: ISL1904FAZ-T
• Description: LED Lighting Drivers High Power LED Controllers, T&R
• Manufacturer: Intersil

Specifications of ISL1904FAZ-T

• Input Voltage: 9 VDC to 20 VDC
• Operating Frequency: 349 Hz
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Minimum Operating Temperature: - 40 C

Functional Block Diagram - ISL1904
OFFREF
DELADJ
RAMP
VREF
IOUT
GND
VDD
CS+
AC
OC
OSCILLATOR
MASTER
ISENSE
LOW PASS FILTER
DETECTO
AC DETECTION
+
-
DUTY CYCLE TO
PEAK
CONVERTER
VOLTAGE
R
LEADING EDGE
CLK
BLANKING
REF
200mV
BG
-
+
IOUT
DETECTOR
-
+
CRCM
PRIMARY CURRENT
SENSE PROCESSOR
AC-PRESENT
UVLO
+
-
OTP SHUTDOWN
150°C TO 170 °C
REFERENCE OUT
600mV
VERR/5
EA1
+
-
VERR
1/5
QUASI-ZVS
SS/5
PRIMARY OC
CLAMP
DELAY
F
MAX
+
-
-
1/5
+
COMPARATOR
-
GENERATOR
REFERENCE
BIAS AND
PWM
BIAS/UVLO/OTP
FB1
CLAMP
F
INHIBIT
MINIMUM DIMMING
LEVEL CONTROL
MIN
CRCM OSCILLATOR/PWM/ERROR AMPLIFIERS
+
-
PWM
LATCH
S
R
Q
Q
PWM
SS
REFINBUFF
VERR
CLK
GENERATOR
TRIANGLE
REFERENCE SS
WAVE
BUFFER
+
+
_
DIMMING PWM
REFINBUFF
-
+
VERR CLAMP
INHIBIT
SOFT-START/POR/
OVP
REFERENCE SS
-
+
ENABLE
SS LOW
SS
FAULT LATCH
S
R
SOFT-START
Q
Q
300ms
+
-
+
- 1.50 V
0.25V
DHC
PWMOUT
OUT
OVP