ISL97656
2
FN6439.6
July 19, 2012
Absolute Maximum Ratings (T
A
= +25°C) Thermal Information
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Terminal Voltage with Respect to GND:
VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
LX to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V
COMP, FB, EN, SS, FREQ to GND. . . . . . . . . . . . . . . . .-0.3V to (VIN +0.3V)
Maximum Continuous Junction Temperature . . . . . . . . . . . . . . . . . .+135°C
ESD Rating (JEDEC)
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2kV
Thermal Resistance (Typical) θ
JA
(°C/W) θ
JC
(°C/W)
10 Ld TDFN Package (Notes 4, 5) . . . . . . . 53 3
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
5. For θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise
noted, all tests are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications V
IN
= 3V, V
OUT
= 12V, I
OUT
= 0mA, FREQ = GND, T
A
= -40°C to +85°C, unless otherwise specified. Boldface
limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 6) TYP
MAX
(Note 6) UNIT
I
DD-SHDN
Shutdown Supply Current EN = 0V 0.1 5 µA
I
DD-STDBY
Standby Supply Current EN = VIN, FB = 1.3V 0.7 mA
I
DD-ACTIVE
Active Supply Current EN = VIN, FB = 1.0V 3 5 mA
V
FB
Feedback Voltage 1.22 1.24 1.26 V
I
DD-FB
Feedback Input Bias Current 0.01 0.5 µA
VIN Input Voltage Range 2.2 6.0 V
D
MAX
- 640kHz Maximum Duty Cycle FREQ = 0V 85 92 %
D
MAX
- 1.2MHz Maximum Duty Cycle FREQ = VIN 85 90 %
I
LIM
Current Limit - Max Peak Input Current 3.8 4.0 5.1 A
I
EN
EN pin Input Bias Current EN = 0V 0.01 0.5 µA
r
DS(ON)
Switch ON Resistance VIN = 2.7V, I
LX
= 1A 0.12 Ω
I
LX-LEAK
Switch Leakage Current VSW = 26V 0.01 3 µA
ΔV
OUT
/ΔV
IN
Line Regulation 2.2V < V
IN
< 5.5V, V
OUT
= 12V 0.2 %
ΔV
OUT
/ΔI
OUT
Load Regulation V
IN
= 3.3V, V
OUT
= 12V, I
O
= 30mA to 200mA 0.3 %
F
OSC1
Switching Frequency Accuracy FREQ = 0V 500 640 740 kHz
F
OSC2
Switching Frequency Accuracy FREQ = VIN 1000 1220 1500 kHz
V
IL
EN, FREQ pin Input Low Level 0.5 V
V
IH
EN, FREQ pin Input High Level 1.5 V
g
M
Error Amp Tranconductance 70 130 250 µA/V
VIN
UVLO
VIN UVLO Threshold rising 2.00 2.10 2.20 V
VIN
UVLO-HYST
VIN UVLO Hysteresis 50 mV
I
SS
Soft-Start Charge Current 2.5 4.5 7. 5 µA
T
OTP
Over-Temperature Protection 150 °C
NOTE:
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
