ISL78228ARZ INTERSIL [Intersil Corporation], ISL78228ARZ Datasheet - Page 5

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

Electrical Specifications
conditions: T
I
-40°C to +105°C. (Continued)
NOTE:
OUT1
LX_ Maximum Duty Cycle
PWM Switching Frequency
Synchronization Range
LX Minimum On-Time
Soft Discharge Resistance
PG
Output Low Voltage
PG Pull-up Resistor
Internal P
Internal P
Delay Time (Rising Edge)
Internal P
EN1, EN2, SYNC
Logic Input Low
Logic Input High
SYNC Logic Input Leakage Current
Enable Logic Input Leakage Current
Thermal Shutdown
Thermal Shutdown Hysteresis
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
= I
OUT2
GOOD
GOOD
GOOD
A
= -40°C to +105°C, V
= 0A to 800mA. (Typical values are at T
Delay Time (Falling Edge)
Low Rising Threshold
Low Falling Threshold
PARAMETER
5
IN
= 2.75V to 5.5V, EN1 = EN2 = V
Unless otherwise noted, all parameter limits are established over the recommended operating
SYMBOL
R
I
SYNC
I
EN_
DIS_
F
S
A
= +25°C, V
SYNC = 0 (forced PWM mode)
EN = LOW
Sinking 1mA, VFB = 0.5V
Percentage of nominal regulation voltage
Percentage of nominal regulation voltage
Pulled up to 5.5V
ISL78228
IN
IN
= 3.6V). Boldface limits apply over the operating temperature range,
, SYNC = 0V, L = 2.2µH, C
TEST CONDITIONS
1
= 10µF, C
(Note 6)
MIN
1.8
1.4
2.7
80
88
82
2
= C
4
= 10µF,
2.25
TYP
100
100
150
0.1
0.1
92
89
25
1
1
1
(Note 6)
MAX
100
130
2.7
0.3
0.4
96
91
4
2
1
1
May 2, 2011
FN7849.0
UNITS
MHz
MHz
MΩ
ms
µA
µA
°C
°C
ns
µs
%
Ω
%
%
V
V
V