ISL78214 Datasheet, PDF (5/15 Pages) Intersil Corporation – 4A Low Quiescent Current High Efficiency Synchronous Buck Regulator

ISL78214
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. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7)
UNITS
Trans-Resistance
RT
0.17 0.20 0.23
Ω
LX
P-Channel MOSFET
ON-Resistance
N-Channel MOSFET
ON-Resistance
LX Maximum Duty Cycle
V_IN = 5V, I_O = 200mA
V_IN = 2.8V, I_O = 200mA
V_IN = 5V, I_O = 200mA
V_IN = 2.8V, I_O = 200mA
-
50
75
mΩ
-
70
100
mΩ
-
50
75
mΩ
-
70
100
mΩ
-
100
-
%
PWM Switching Frequency
LX Minimum On-Time
f_S
SYNCH = High
0.80 1.0 1.20
-
-
140
MHz
ns
PG
Output Low Voltage
Sinking 1mA
-
-
0.3
V
Delay Time (Rising Edge)
0.65
1
1.35
ms
PG Pin Leakage Current
PGOOD Rising Threshold
PG = V_IN = 3.6V
Percentage of regulation voltage
-
0.01
2
µA
89
92
95
%
PGOOD Falling Threshold
Percentage of regulation voltage
85
88
91
%
PGOOD Delay Time (Falling
Edge)
-
15
-
µs
EN, SYNCH
Logic Input Low
-
-
0.4
V
Logic Input High
1.4
-
-
V
Synch Logic Input Leakage
Current
I_SYNCH Pulled up to 5.5V
-
0.1
4
µA
Enable Logic Input Leakage
I_EN
Current
-
0.1
4
µA
Thermal Shutdown
-
140
-
°C
Thermal Shutdown Hysteresis
-
25
-
°C
NOTES:
6. Limits established by characterization and are not production tested.
7. 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.
5
FN7551.0
March 8, 2010