ISL78214_15 Datasheet, PDF (4/15 Pages) Intersil Corporation – 4A Low Quiescent Current High Efficiency Synchronous Buck Regulator

ISL78214
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 (Tested per AEC-Q100-002) . . . . . . . . . . . . . . 3000V
Charged Device Model (Tested per AEC-Q100-011). . . . . . . . . . . . 2000V
Machine Model (Tested per AEC-Q100-003) . . . . . . . . . . . . . . . . . . . 250V
Latch-up (Tested per AEC-Q100-004, ClassII, Level A). . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
_JA (°C/W) _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 TB493
Recommended Operating Conditions
VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8V to 5.5V
Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 4A
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. _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. _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 across the operating temperature range, -40°C to +105°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7)
UNIT
INPUT SUPPLY
V_DD 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
-
35
-
µA
SYNCH = GND, no load at the output and no
-
30
45
µA
switches switching
Shutdown Supply Current
OUTPUT REGULATION
SYNCH = VDD, F_S = 1MHz, no load at the output
-
6.5
10
mA
I_SD
V_IN = 5.5V, EN = low, T_A = +85°C
-
0.1
4
µA
V_IN = 5.5V, EN = low, T_A = +105°C
-
0.1
10
µA
Reference Voltage
VFB Bias Current
Line Regulation
Soft-start Ramp Time Cycle
V_REF
I_VFB
VFB = 0.75V
V_IN = V_O + 0.5V to 5.5V (minimal 2.8V)
0.790 0.8 0.810
V
-
0.1
-
µA
-
0.2
-
%/V
-
1
-
ms
OVERCURRENT PROTECTION
Current Limit Blanking Time
Overcurrent and Auto Restart Period
Switch Current Limit
Peak Skip Limit
COMPENSATION
t_OCON
t_OCOFF
I_LIMIT
I_SKIP
(Note 6)
(Note 6)
-
17
-
Clock pulses
-
4
-
SS cycle
4.9
6.0
7.1
A
-
1.3
-
A
Error Amplifier Transconductance
-
20
-
µA/V
Transresistance
RT
0.17 0.20 0.23
Ω
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4
FN7551.3
May 12, 2015