ISL6341 Datasheet, PDF (4/17 Pages) Intersil Corporation – 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6341, ISL6341A, ISL6341B, ISL6341C
Absolute Maximum Ratings
Supply Voltage, (V_CC) . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 15V
BOOT Voltage (V_BOOT-GND). . . . . . . . . . . . . . . . GND - 0.3V to 36V
BOOT to PHASE Voltage (V_BOOT - V_PHASE) . . . GND - 0.3V to 15V
-0.3V to 16V (<10ns, 10µJ)
UGATE Voltage (V_UGATE) . . . . . . . V_PHASE - 0.3V to V_BOOT + 0.3V
V_PHASE - 3.5V (<100ns Pulse Width, 2µJ) to V_BOOT +0.3V
LGATE/OCSET Voltage (V_LGATE) . . . . . . GND - 0.3V to V_CC + 0.3V
GND - 5V (<100ns Pulse Width, 2µJ) to V_CC + 0.3V
PHASE Voltage (V_PHASE) . . . . . . . . . .GND - 0.3V to V_BOOT + 0.3V
GND - 8V (<400ns, 20µJ) to 30V (<200ns, V_BOOT-GND <36V)
FB, VOS, COMP/EN Voltage . . . . . . . . . . . . . . . . . GND - 0.3V to 6V
PGOOD Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 7V
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
10 Ld TDFN Package (Notes 1, 2). . . .
44
3.5
Maximum Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . -65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Supply Voltage Range, V_CC . . . . . . . . . . . . . . . . . . . +4.5V to 14.4V
Ambient Temperature Range
ISL6341xCRZ (Commercial) . . . . . . . . . . . . . . . . . . 0°C to +70°C
ISL6341xIRZ (Industrial) . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
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:
1. θ_JA is measured with the component mounted on a high effective thermal conductivity test board in free air, with “direct attach” features. See
Tech Brief TB379 for details.
2. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Test Conditions: V_CC = 12V, T_J = 0°C to +85°C, Unless Otherwise Noted. 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.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V_CC SUPPLY CURRENT
Input Bias Supply Current
Input Bias Supply Current
POWER-ON RESET
I_{VCC_dis} V_CC = 12V; disabled
I_{VCC_en} V_CC = 12V; enabled (but not switching)
7.0
mA
6.4
8.9
10.4
mA
Rising V_CC POR Threshold
V_CC POR Threshold Hysteresis
OSCILLATOR
V_POR
3.8
4.2
4.47
V
0.15
0.48
0.85
V
Switching Frequency
f_OSC
ISL6341C, ISL6341CC
ISL6341I, ISL6341CI
270
300
330
kHz
240
300
330
kHz
ISL6341AC, ISL6341BC
540
600
660
kHz
ISL6341AI, ISL6341BI
510
600
660
kHz
Ramp Amplitude (Note 3)
REFERENCE
ΔV_OSC
1.5
V_P-P
Reference Voltage Tolerance
V_REF
ISL6341C, ISL6341AC, ISL6341BC,
ISL6341CC
0.7936 0.8000 0.8064
V
ISL6341I, ISL6341AI, ISL6341BI, ISL6341CI 0.7920 0.8000 0.8080
V
ERROR AMPLIFIER
DC Gain (Note 3)
GAIN
96
dB
Gain-Bandwidth Product (Note 3)
GBWP
20
MHz
Slew Rate (Note 3)
SR
8
V/µs
GATE DRIVERS
Upper Gate Source Impedance
Upper Gate Sink Impedance
Lower Gate Source Impedance
Lower Gate Sink Impedance
Upper Gate Source Impedance
R_UG-SRCh V_CC = 12V; I = 50mA
R_UG-SNKh V_CC = 12V; I = 50mA
R_LG-SRCh V_CC = 12V; I = 50mA
R_LG-SNKh V_CC = 12V; I = 50mA
R_UG-SRCl V_CC = 5V; I = 50mA
2.1
Ω
1.6
Ω
1.4
Ω
1.0
Ω
2.4
Ω
4
FN6538.2
December 2, 2008