ISL6528 Datasheet, PDF (4/13 Pages) Intersil Corporation – Dual Regulator - Standard Buck PWM and Linear Power Controller

ISL6528
Absolute Maximum Ratings
UGATE, BOOT. . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +10V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +7V
FB, DRIVE2, FB2, COMP, . . . . . . . . . . . GND -0.3V to VCC +0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Operating Conditions
Supply Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%
Supply Voltage to drain of upper MOSFET . . . . . . . . . +3.3V ±10%
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . 0^oC to 70^oC
Junction Temperature Range. . . . . . . . . . . . . . . . . . . 0^oC to 125^oC
Thermal Information
Thermal Resistance (Typical, Note 1)
θ_JA (^oC/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
110
Maximum Junction Temperature (Plastic Package) . . . . . . . 150^oC
Maximum Storage Temperature Range . . . . . . . . . . -65^oC to 150^oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300^oC
(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.
NOTE:
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.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block and Simplified Power System
Diagrams, and Typical Application Schematic
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
VCC SUPPLY CURRENT
Nominal Supply Current
POWER-ON RESET
I_CC
UGATE and DRIVE2 Open
2
3.7 6.5
mA
Rising VCC Threshold
4.25 4.4 4.50
V
Falling VCC Threshold
3.75 3.8 4.00
V
OSCILLATOR AND SOFT-START
Free Running Frequency
Ramp Amplitude
Soft-Start Interval
REFERENCE VOLTAGE
F_OSC
∆V_OSC
T_SS
550 600 650
-
1.5
-
3.10 3.42 3.75
kHz
V_P-P
ms
Reference Voltage
System Accuracy
V_REF
.784 0.800 .816
V
-2.00 - +2.00
%
PWM CONTROLLER ERROR AMPLIFIER
DC Gain
-
80
-
dB
Gain-Bandwidth Product
GBWP
15
-
-
MHz
Slew Rate
SR
-
6
-
V/µs
Undervoltage Level (V_FB/V_REF)
V_UV
PWM CONTROLLER GATE DRIVER
48.13 52.5 56.88
%
UGATE Source Impedance
UGATE Sink Impedance
LINEAR REGULATOR ERROR AMPLIFIER
R_UGATE
R_UGATE
VCC = 5V, V_UGATE = 2.5V
V_UGATE-PHASE = 2.5V
- 2.75 5.0
Ω
-
3.0 5.0
Ω
Output Drive Current
VCC > 4.5V
100 120
-
mA
Overvoltage Level (V_FB2/V_REF)
Undervoltage Level (V_FB2/V_REF)
V_OV
V_UV
150.0 160.0 175.0
%
48.13 52.5 56.88
%
4
FN9038.3
December 28, 2004