ISL78228ARZ INTERSIL [Intersil Corporation], ISL78228ARZ Datasheet - Page 4

• Manufacturer Part Number: ISL78228ARZ
• Description: Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator
• Manufacturer: INTERSIL [Intersil Corporation]

Absolute Maximum Ratings
Supply Voltage (V
EN1, EN2, PG, SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to V
LX1, LX2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to 6.5V
LX1, LX2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V (100ns)
FB1, FB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V
ESD Rating
Latch Up (Tested per JESD78C; Class II, Level A) . . . . . . . . . . . . . . . 100mA
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:
Electrical Specifications
conditions: T
I
-40°C to +105°C.
OUT1
INPUT SUPPLY
V
Quiescent Supply Current
Shut Down Supply Current
OUTPUT REGULATION
FB1, FB2 Regulation Voltage
FB1, FB2 Bias Current
Line Regulation
Soft-Start Ramp Time Cycle
OVERCURRENT PROTECTION
Peak Overcurrent Limit
Peak SKIP Limit
LX1, LX2
P-Channel MOSFET ON-Resistance
N-Channel MOSFET ON-Resistance
4. θ
5. For θ
IN
V
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 3kV
Machine Model (Tested per JESD-A115-A) . . . . . . . . . . . . . . . . . . . 300V
Charge Device Model (Tested per JESD22-C101C). . . . . . . . . . . . . . . 2kV
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V (DC) to 7V (20ms)
IN
Brief TB379.
Undervoltage Lockout Threshold
JA
= I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V (20ms)
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
OUT2
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
A
= -40°C to +105°C, V
= 0A to 800mA. (Typical values are at T
IN
PARAMETER
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
4
IN
= 2.75V to 5.5V, EN1 = EN2 = V
Unless otherwise noted, all parameter limits are established over the recommended operating
(Reference to GND)
SYMBOL
V
I
I
V
skip1
skip2
I
I
I
I
UVLO
I
FB_
pk1
pk2
VIN
SD
FB_
A
= +25°C, V
Rising
Falling
SYNC = V
output and no switches switching.
VFB1 = VFB2 = 0.7V
SYNC = GND, EN1 = EN2 = VIN,
F
V
VFB = 0.55V
V
I
V
V
V
V
V
OUT
IN
S
IN
IN
IN
IN
IN
IN
IN
ISL78228
= 2.25MHz, no load at the output
+ 0.3V
= 5.5V, EN1 = EN2 = GND
= V
= 3.6V
= 5.5V, I
= 2.75V, I
= 5.5V, I
= 2.75V, I
= 0A)
O
IN
+ 0.5V to 5.5V (minimal 2.75V,
IN
IN
= 3.6V). Boldface limits apply over the operating temperature range,
, EN1 = EN2 = V
O
O
, SYNC = 0V, L = 2.2µH, C
TEST CONDITIONS
O
O
= 200mA
= 200mA
= 200mA
= 200mA
Thermal Information
Thermal Resistance (Typical)
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
Recommended Operating Conditions
V
Load Current Range Per Channel . . . . . . . . . . . . . . . . . . . . . 0mA to 800mA
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
IN
10 Ld 3x3 DFN Package (Notes 4, 5) . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.75V to 5.5V
IN
, no load at the
1
= 10µF, C
(Note 6)
0.590
0.95
0.95
MIN
180
180
2.1
2
= C
4
= 10µF,
TYP
250
250
180
320
180
320
2.5
2.4
0.1
6.5
0.6
0.1
0.2
1.2
1.2
30
2
θ
JA
(°C/W)
49
(Note 6)
0.610
MAX
2.75
360
360
350
450
350
450
1.6
1.6
50
12
1
θ
JC
May 2, 2011
(°C/W)
FN7849.0
UNITS
4
%/V
mΩ
mΩ
mΩ
mA
mA
mA
mΩ
ms
µA
µA
µA
V
V
V
A
A