ISL6521 Datasheet, PDF (4/13 Pages) Intersil Corporation – PWM Buck DC-DC and Triple Linear Power Controller

ISL6521
Absolute Maximum Ratings
UGATE, BOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 15V
VCC, PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +7V
DRIVE, LGATE, all other pins . . . . . . . . GND - 0.3V to VCC + 0.3V
Operating Conditions
Supply Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%
Ambient Temperature Range
ISL6521CBZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
ISL6521IBZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . . -40°C to 125°C
Thermal Information
Thermal Resistance (Typical, Note 1)
θ_JA (°C/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
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.
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 Operating Conditions: VCC = 5V, T_A = 0°C to 70°C, Unless Otherwise Noted. Typical specifications are at
T_A = 25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
VCC SUPPLY CURRENT
Nominal Supply Current
POWER-ON RESET
I_CC
UGATE, LGATE, and DRIVEx Open
-
5
-
mA
Rising VCC Threshold
4.25 - 4.51
V
Falling VCC Threshold
3.74 -
4.0
V
OSCILLATOR AND SOFT-START
Free Running Frequency
F_OSC
ISL6521CBZ
ISL6521IBZ (-40°C to 85°C)
275 300 325
kHz
250 300 350
kHz
Ramp Amplitude
Soft-Start Interval
REFERENCE VOLTAGE
∆V_OSC
T_SS
-
1.5
-
6.25 6.83 7.40
V_P-P
ms
Reference Voltage (All Regulators)
All Outputs Voltage Regulation
V_REF
ISL6521CBZ
0.780 0.800 0.820
V
-2.0
-
+2.0
%
ISL6521IBZ (-40°C to 85°C)
-2.5
-
+2.5
%
LINEAR REGULATORS (OUT2, OUT3, AND OUT4)
Output Drive Current (All Linears)
VCC > 4.5V
100 120
-
mA
Undervoltage Level (V_FB/V_REF)
V_UV
SYNCHRONOUS PWM CONTROLLER ERROR AMPLIFIER
-
70
-
%
DC Gain
-
80
-
dB
Gain-Bandwidth Product
GBWP
15
-
-
MHz
Slew Rate
SR
COMP = 10pF
-
6
-
V/µs
PWM CONTROLLER GATE DRIVERS
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
PROTECTION
I_UGATE
I_UGATE
I_LGATE
I_LGATE
VCC = 5V, V_UGATE = 2.5V
V_UGATE-PHASE = 2.5V
VCC = 5V, V_LGATE = 2.5V
V_LGATE = 2.5V
-
-1
-
A
-
1
-
A
-
-1
-
A
-
2
-
A
OCSET Current Source
I_OCSET
ISL6521CBZ
ISL6521IBZ (-40°C to 85°C)
34 40 46
µA
31.5 40 48
µA
4