Rainbow Electronics MAX1606 - Manual (Page 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CONTROL INPUTS ( SHDN, LIM)
V IH 2.4V ≤ V
CC
≤ 5.5V
0.8 ×
V
CC
SHDN Input Threshold
V IL 2.4V ≤ V
CC
≤ 5.5V
0.2 ×
V CC
V
SHDN Input Bias Current I SHDN V CC = 5.5V, V SHDN = 0 to 5.5V -1 1 µA
LIM Input Low Level 2.4V ≤ V
CC
≤ 5.5V 0.4 V
LIM Input Float Level
2.4V ≤ V
CC
≤ 5.5V,
I LIM = ±0.5µA
( V C C / 2)
- 0.25V
( V C C / 2)
+ 0.25V
V
LIM Input High Level 2.4V ≤ V
CC
≤ 5.5V
V CC
- 0.4V
V
SHDN = V
CC , LIM = GND or V CC -2 2
LIM Input Bias Current I LIM
SHDN = GND 0.1 1
µA
PMOS ISOLATION SWITCH (BATT to SW)
PMOS Current Limit V C C = 2.5V, V BATT = 1.5V 0.65 0.85 1.5 A
PMOS On-Resistance R DS(ON) V CC = 2.5V, V BATT = 1.5V, I SW = 100mA 0.25 0.4 Ω
Soft-Start Time t SS
V CC = 2.5V, V BATT = 1.5V,
R SW = 50 Ω to GND
0.3 ms
MAX1606
28V Internal Switch LCD Bias Supply
with True Shutdown
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS
(V CC = 3.3V, V CC = BATT = SHDN, T A = -40°C to +85°C, unless otherwise noted.) (Note 2)
ELECTRICAL CHARACTERISTICS (continued)
(V CC = 3.3V, V CC = BATT = SHDN, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V CC Supply Voltage V CC (Note 1) 2.4 5.5 V
BATT Input Voltage Range V
BATT
(Note 1) 0.8 5.5 V
V CC Undervoltage Lockout V UVLO V CC falling, 30mV typical hysteresis 2.0 2.37 V
V CC Quiescent Supply Current I CC V FB = 1.3V 360 µA
V CC Shutdown Supply Current SHDN = GND 1 µA
BATT Input Supply Current I BATT V FB = 1.3V 40 µA
BATT Shutdown Supply Current SHDN = GND 1 µA
Feedback Set Point V FB 1.215 1.285 V
Feedback Input Bias Current I FB V FB = 1.3V 100 nA
INDUCTOR CONNECTIONS (LX, SW)
LX Voltage Range V LX 28 V
LIM = V CC 0.35 0.58
LIM = floating 0.18 0.30 LX Switch Current Limit I LX(MAX)
LIM = GND 0.08 0.17
A
LX On-Resistance R LX V CC = 3.3V, I LX = 100mA 2 Ω
LX Leakage Current V LX = 28V 2 µA
Maximum LX On-Time t ON 9 17 µs