ISL1903EVAL2Z INTERSIL [Intersil Corporation], ISL1903EVAL2Z Datasheet - Page 11

• Manufacturer Part Number: ISL1903EVAL2Z
• Description: Dimmable Buck LED Driver - AC Mains or DC Input LED Driver
• Manufacturer: INTERSIL [Intersil Corporation]

Electrical Specifications
ISL1903” on page 2 and “Typical Application schematics” beginning on page 3. V
+125°C, Typical values are at T
NOTES:
Test Waveforms and Circuits
Unbiased Output Voltage Clamp
Frequency
Maximum Duty Cycle
Minimum On-Time
OVP
THERMAL PROTECTION
Thermal Shutdown
Hysteresis
7. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
8. Limits established by characterization and are not production tested.
OVP Threshold
OVP Hysteresis
Input Bias Current
OVP Clamp Voltage
and are not production tested.
8V
FIGURE 2. RISE/FALL TIME TEST CIRCUIT
1
2
3
4
5
6
7
8
VDD
OFFREF PWMOUT
VREF
IOUT
CS+
OC
FB
DELADJ
ISL1903
54k
5k
PARAMETER
RAMP
VERR
GND
OUT
DHC
OVP
AC
16
15
14
13
12
11
10
9
0 TO 1V 120Hz
A
11
470pF
= +25°C; Boldface limits apply over the operating temperature range, -40°C to +125°C.
Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram -
1nF
2.2nF
VDD = 6V, I
REFIN = 0.5V
REFIN = 0V
I
(Note 8)
(Note 8)
OVP
= 1mA
ISL1903
TEST CONDITIONS
LOAD
= 3mA
DD
PWMOUT
OUT
OR
= 17V, R
(Note 7)
RAMP
1.46
FIGURE 3. RISE/FALL TIMES
MIN
291
150
-1.0
5.4
10
-
-
-
-
= 54kΩ, C
t
R
1.50
320
160
TYP
20
25
-
-
-
-
-
RAMP
= 470pF, T
(Note 7)
MAX
1.54
349
100
170
1.9
0.5
1.0
7.0
27
-
(Continued)
September 20, 2012
A
t
F
= -40°C to
10%
90%
UNITS
FN8285.1
Hz
μA
μA
°C
°C
μs
%
V
V
V