ISL6526_07 Datasheet, PDF (5/15 Pages) Intersil Corporation – Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6526, ISL6526A
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7.0V
Absolute Boot Voltage, V_BOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Upper Driver Supply Voltage, V_BOOT - V_PHASE . . . . . . . . . . . +7.0V
Input, Output or I/O Voltage . . . . . . . . . . . GND -0.3V to VCC +0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Operating Conditions
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.3V ±10%
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-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) . . . . . . . . . . . .
67
N/A
QFN Package (Note 2). . . . . . . . . . . . .
35
5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . +300°C
(SOIC - Lead Tips Only)
For Recommended soldering conditions see Tech Brief TB389.
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. θ_JC, the
“case temp” is measured at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications Recommended Operating Conditions, unless otherwise noted V_CC = 3.3V ±5% and T_A = +25°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
VCC SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
I_BIAS
6.1
6.9
7.7
Rising CPVOUT POR Threshold
POR Commercial
4.25
4.30
4.42
Industrial
4.10
4.30
4.50
CPVOUT POR Threshold Hysteresis
0.3
0.6
0.9
OSCILLATOR
Frequency
f_OSC
IC = ISL6526C, Commercial
IC = ISL6526I, Industrial
275
300
325
250
300
340
IC = ISL6526AC, Commercial
530
600
645
IC = ISL6526AI, Industrial
510
600
650
Ramp Amplitude
REFERENCE
ΔV_OSC
-
1.5
-
Reference Voltage Tolerance
-
-
1.5
Nominal Reference Voltage
CHARGE PUMP
V_REF
-
0.800
-
Nominal Charge Pump Output
Charge Pump Output Regulation
V_CPVOUT V_VCC = 3.3V, No Load
-
5.1
-
-
2
-
ERROR AMPLIFIER
DC Gain
Guaranteed by Design
-
88
-
Gain-Bandwidth Product
GBWP
-
15
-
Slew Rate
SR
-
6
-
SOFT-START
Soft-Start Slew Rate
Commercial
6.2
-
7.3
Industrial
6.2
-
7.6
UNITS
mA
V
V
V
kHz
kHz
kHz
kHz
V_P-P
%
V
V
%
dB
MHz
V/μs
ms
ms
5
FN9055.8
March 20, 2007