Datasheet

MAX1763
1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(CLK/SEL = ONB = FB = PGND = GND, ISET = REF, OUT = POUT, V
ONA
= V
AIN
= V
OUT
= 3.6V, T
A
= 0°C to +85°C, unless other-
wise noted. Typical values are at T
A
= +25°C.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC-DC SWITCHES
POUT Leakage Current V
LX
= 0V, V
OUT
= 5.5V 0.1 10 µA
LX Leakage Current V
LX
= V
ONB
= V
OUT
= 5.5V, V
ONA
= 0V 0.1 10 µA
N channel 0.075 0.13
Switch On-Resistance
P channel 0.13 0.25
Ω
N-Channel Current Limit 2.0 2.5 3.4 A
P-Channel Turn-Off Current CLK/SEL = GND 10 120 240 mA
REFERENCE
Reference Output Voltage I
REF
= 0A 1.230 1.250 1.270 V
Reference Load Regulation -1µA < I
REF
< 50µA 5 15 mV
Reference Supply Rejection 2.5V < V
OUT
< 5V 0.2 5 mV
GAIN BLOCK
AIN Reference Voltage I
AO
= 20µA 910 938 970 mV
AIN Input Current V
AIN
= 1.5V ±0.01 ±30 nA
Transconductance V
AO
= 1V, 10µA < I
AO
< 100µA 5 10 16 mS
AO Output Low Voltage V
AIN
= 0.5V, I
AO
= 100µA 0.1 0.4 V
AO Output High Leakage V
AIN
= 1.5V, V
AO
= 5.5V 0.01 1 µA
Gain-Block Enable Threshold
(V
OUT
- V
AIN
) (Note 6)
1.4 V
Gain-Block Disable Threshold
(V
OUT
- V
AIN
) (Note 6)
0.2 V
LOGIC INPUTS
CLK/SEL Input Low Level 2.5V ≤ V
OUT
≤ 5.5V
(0.2)
V
OUT
V
CLK/SEL Input High Level 2.5 V ≤ V
OUT
≤ 5.5V
(0.8)
V
OUT
V
1.1 V ≤ V
OUT
≤ 1.8V 0.2
ONA and ONB Input Low Level
(Note 7)
1.8 V ≤ V
OUT
≤ 5.5V 0.4
V
1.1 V ≤ V
OUT
≤ 1.8V
V
OUT
- 0.2V
ONA and ONB Input High Level
(Note 7)
1.8 V ≤ V
OUT
≤ 5.5V 1.6
V
Input Leakage Current CLK/SEL, ONA, ONB 0.01 1 µA
Minimum CLK/SEL Pulse Width 100 ns
Maximum CLK/SEL
Rise/Fall Time
100 ns