Rainbow Electronics MAX8719 - Manual (Page 4)

MAX8718/MAX8719
High-Voltage, Low-Power Linear Regulators for
Notebook Computers
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1 V IN = 15V, I OUT = 5µA, T A = -40°C to +85°C , unless otherwise noted.) (Note 4)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range V IN 4 28 V
Supply Current (MAX8718) I IN
SHDN = IN, V
IN = 6V to 28V 25 µA
Supply Current (MAX8719) I
IN
SHDN = IN, V
IN
= 6V to 28V 25 µA
OUT Minimum Load Current 5 µA
Shutdown Supply Current SHDN = 0V 3 µA
V IN = 6V to 28V, I LOAD = 5µA to 100mA,
5/3 = GND
3.10 3.48
OUT Output Voltage (MAX8718)
V IN = 6V to 28V, I LOAD = 5µA to 100mA,
5/3 = OUT
4.72 5.25
V
FB = OUT, V IN = 6V to 28V, I LOAD = 1mA 1.215 1.265
FB Threshold (MAX8719) V
FB FB = OUT, V IN = 6V to 28V,
I LOAD = 5µA to 100mA (Note 2)
1.18 1.28
V
FB Input Current (MAX8719) I FB V FB = 1.3V -40 +40 nA
5/3 Input Current (MAX8718) I 5/3 V 5/3 = 5V -30 +30 nA
Dropout Voltage V DROPOUT I LOAD = 100mA (Note 3) 560 mV
Output Current Limit I LIM V OUT = 0, V IN = 6V 125 375 mA
MAX8718 0.16
Capacitive Load Requirements
MAX8719 0.23
µF/mA
Startup Time Response
Rising edge of IN or SHDN to OUT within
spec limits, C
OUT = 10µF, R LOAD = 500 Ω,
V OUT = 5V
1 ms
V CC Threshold (MAX8718) -40 °C < T
A < +85 °C, rising edge only
0.85 ×
V OUT
0.95 ×
V OUT
V
V CC Threshold (MAX8719) -40 °C < T
A < +85 °C, rising edge only
0.85 ×
V FB
0.95 ×
V FB
V
PGOOD Active-Timeout Period 100 300 ms
PGOOD Output Low Voltage I SINK = 1.6mA, V CC = GND 0.3 V
SHDN Input Low Voltage 0.25 V
SHDN Input High Voltage 1.4 V
SHDN Input Bias Current V SHDN = 0 or 15V, T A = -40 °C to +85°C -1 +1 µA
Note 1: Limits are 100% production tested at T A = +25°C. Limits over the operating temperature range are guaranteed through cor-
relation using standard quality control (SQC) methods.
Note 2: Pulse test at V
IN
= 28V, I
OUT
= 100mA to avoid exceeding package power-dissipation limits.
Note 3: Dropout voltage is tested by reducing the input voltage until V
OUT
drops to 100mV below its nominal value as measured
with V
IN
starting 2V above V
OUT
.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.