Rainbow Electronics MAX1765 - Manual (Page 3)

MAX1765
800mA, Low-Noise, Step-Up DC-DC Converter
with 500mA Linear Regulator
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ELECTRICAL CHARACTERISTICS (continued)
(V OUT = V POUT = V INL = V ONA = V ONL = 3.6V, CLK/SEL = FBL = ONB = TRACK = PGND = GND, ISET = REF (bypassed with
0.22µF), LX = open, OUTL = open (bypassed with 4.7µF), 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
DC-DC SWITCHES
POUT Leakage Current V LX = 0, V OUT = 5.5V 0.1 10 µA
LX Leakage Current V LX = V OUT = V ONB = 5.5V, ONA = GND 0.1 10 µA
N-channel 0.17 0.28
Switch On-Resistance
P-channel 0.22 0.5
Ω
N - C hannel C ur r ent Li m i t ( N ote 4) I LIM V ISET = 1.25V, CLK/SEL = GND or OUT 1000 1250 1600 mA
P-Channel Turn-Off Current CLK/SEL = GND 10 50 120 mA
REFERENCE
Reference Output Voltage V REF I REF = 0 1.230 1.250 1.270 V
Reference Load Regulation -1 µA < I
REF < 50 µA 5 15 mV
Reference Supply Regulation 2.5V < V OUT < 5.5V 0.2 5 mV
LINEAR REGULATOR
INL Voltage Range (Note 1) 2.3 5.5 V
INL Startup Voltage V INL V OUT = 2V, rising edge only 2.15 2.30 2.45 V
Output Voltage in Internal
Feedback Mode
FBL = GND, I OUTL = 10mA 2.80 2.85 2.90 V
FBL Dual-Mode Threshold 150 250 350 mV
FBL Regulation Voltage V FBL FBL = OUTL, I OUTL = 10mA, I REF = 0 1.230 1.250 1.270 V
FBL Input Leakage Current V FBL = 1.5V 0.01 50 nA
OUTL Adjust Range 1.25 5 V
Short-Circuit Current Limit V FBL = 1V 550 1300 mA
Dropout Resistance V FBL = 1V, I OUTL = 500mA 0.25 0.5 Ω
Load Regulation 1mA < I OUTL < 500mA, FBL = GND 0.5 1 %
Line Regulation
2.5V < (V OUT = V INL = V POUT ) < 5.5V,
FBL = OUTL
-0.5 0.5 %
INL Supply Current in Shutdown OUTL = ONA = ONL = GND 0.1 10 µA
INL No-Load Supply Current I OUTL = 0, V INL = 5.5V 90 250 µA
AC Power-Supply Rejection f = 10kHz 65 dB
Thermal Shutdown Hysteresis approximately 10 °C 160 °C