ISL78213 Datasheet, PDF (4/15 Pages) Intersil Corporation – 3A Low Quiescent Current, High Efficiency Synchronous Buck Regulator

ISL78213
Absolute Maximum Ratings (Reference to GND)
VIN, VDD . . . . . . . . . . . . . . -0.3V to 6V (DC) or 7V (20ms)
EN, SYNCH, PG . . . . . . . . . . . . . . . . . . -0.3V to VIN + 0.3V
LX . . . -1.5V (100ns)/-0.3V (DC) to 6.5V (DC) or 7V (20ms)
VFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.8V
ESD Ratings
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . 3000V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . 2000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 250V
Latch-up . . . . . . . . . . . . . . Tested and passed per JESD78A
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
16 Ld QFN Package (Notes 4, 5) . 39
3
Junction Temperature Range . . . . . . . . . . -55°C to +125°C
Storage Temperature Range . . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
VIN Supply Voltage Range . . . . . . . . . . . . . . . . 2.8V to 5.5V
Load Current Range . . . . . . . . . . . . . . . . . . . . . . 0A to 3A
Ambient Temperature Range . . . . . . . . . . -40°C to +105°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:
4. 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.
5. θ_JC, “case temperature” location is at the center of the exposed metal pad on the package underside.
Electrical Specifications
Unless otherwise noted, all parameter limits are established over the recommended
operating conditions and the typical specification are measured at the following conditions
unless otherwise noted: T_A = -40°C to +105°C, V_IN = 3.6V, EN = VDD. Typical values are at
T_A = +25°C. Boldface limits apply over the operating temperature range, -40°C to
+105°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
INPUT SUPPLY
V_IN Undervoltage Lockout Threshold
V_UVLO
Rising, no load
Falling, no load
-
2.6
2.8
V
2.15 2.35
-
V
Quiescent Supply Current
I_VIN
SYNCH = GND, no load at the output
SYNCH = GND, no load at the output
and no switches switching
-
35
-
µA
-
30
45
µA
SYNCH = VDD, F_S = 1MHz, no load at
the output
-
6.5
10
mA
Shut Down Supply Current
OUTPUT REGULATION
I_SD V_IN = 5.5V, EN = low
-
0.1
4
µA
Reference Voltage
VFB Bias Current
Line Regulation
Soft-Start Ramp Time Cycle
V_REF
0.790 0.8 0.810
I_VFB VFB = 0.75V
-
0.1
-
V_IN = V_O + 0.5V to 5.5V (minimal 2.8V)
-
0.2
-
-
1
-
V
µA
%/V
ms
OVERCURRENT PROTECTION
Current Limit Blanking Time
t_OCON
-
17
-
Clock
pulses
Overcurrent and Auto Restart Period t_OCOFF
-
4
-
SS
cycle
Switch Current Limit
Peak Skip Limit
COMPENSATION
I_LIMIT
I_SKIP
(Note 6)
(Note 6)
4.0
4.8
5.9
A
-
1.2
-
A
Error Amplifier Trans-Conductance
-
20
-
µA/V
4
FN7550.1
March 16, 2010