ISL6520A_07 Datasheet, PDF (4/12 Pages) Intersil Corporation – Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6520A
Absolute Maximum Ratings
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.0V
Absolute Boot Voltage, V_BOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Upper Driver Supply Voltage, V_BOOT - V_PHASE . . . . . . . . 7.0V (DC)
8.0V (<10ns Pulse Width, 10μJ)
Input, Output or I/O Voltage . . . . . . . . . . . GND -0.3V to VCC +0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Operating Conditions
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%
Ambient Temperature Range - ISL6520AC . . . . . . . . . 0°C to +70°C
Ambient Temperature Range - ISL6520AI . . . . . . . . .-40°C to +85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
SOIC Package (Note 1) . . . . . . . . . . . . . . 95
N/A
QFN Package (Notes 2, 3). . . . . . . . . . . . . 45
7
Maximum Junction Temperature
(Plastic Package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . -65°C to +150°C
Maximum Lead Temperature
(Soldering 10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. 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.
2. θ_JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VCC SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
I_VCC
2.6
3.2
3.8
mA
Rising VCC POR Threshold
POR
4.19
4.30
4.50
V
VCC POR Threshold Hysteresis
-
0.25
-
V
OSCILLATOR
Frequency
f_OSC
ISL6520AC, VCC = 5V
ISL6520AI, VCC = 5V
250
300
340
kHz
230
300
340
kHz
Ramp Amplitude
REFERENCE
DV_OSC
-
1.5
-
V_P-P
Reference Voltage Tolerance
ISL6520AC
-1.5
-
+1.5
%
ISL6520AI
-2.5
-
+2.5
%
Nominal Reference Voltage
ERROR AMPLIFIER
V_REF
-
0.800
-
V
DC Gain
Guaranteed By Design
-
88
-
dB
Gain-Bandwidth Product
GBWP
-
15
-
MHz
Slew Rate
SR
-
8
-
V/µs
GATE DRIVERS
Upper Gate Source Current
Upper Gate Sink Current
Lower Gate Source Current
Lower Gate Sink Current
PROTECTION / DISABLE
I_UGATE-SRC V_BOOT - V_PHASE = 5V, V_UGATE = 4V
I_UGATE-SNK
I_LGATE-SRC V_VCC = 5V, V_LGATE = 4V
I_LGATE-SNK
-
-1
-
A
-
1
-
A
-
-1
-
A
-
2
-
A
OCSET Current Source
I_OCSET
ISL6520AC
ISL6520AI
17
20
22
µA
14
20
24
µA
Disable Threshold
V_DISABLE
-
0.8
-
V
4
FN9016.5
March 28, 2007