MAX849 MAXIM [Maxim Integrated Products], MAX849 Datasheet - Page 3

• Manufacturer Part Number: MAX849
• Description: 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(V
unless otherwise noted.)
DC-DC SWITCHES
ADC
POWER-GOOD
LOGIC AND CONTROL INPUTS
Operating Current in Low-Power
Mode (Note 6)
Operating Current in Low-Noise
Mode (Note 6)
POUT Leakage Current
LX Leakage Current
Switch On-Resistance
N-Channel Current Limit
Data Output Voltage Low
Data Output Voltage High
AIN1 Input Voltage Range
AIN2 Input Voltage Range
AIN1, AIN2 Input Current
Accuracy
Internal Trip Level
External Trip Level
POK Low Voltage
POK High Leakage Current
POKIN Leakage Current
Input Low Voltage
Input High Voltage
Logic Input Current
Internal Oscillator Frequency
Oscillator Maximum Duty Cycle
External Clock Frequency Range
CLK/SEL Pulse Width
CLK/SEL Rise/Fall Time
OUT
= 3.6V, GND = PGND = CLK/SEL = ON1 = ON2 = AINSEL = AIN1 = AIN2 = FB = POKIN, POUT = OUT, T
PARAMETER
_______________________________________________________________________________________
Low-Noise, Step-Up DC-DC Converters
I
I
AINSEL = GND
AINSEL = OUT
f
f
monotonic to 8 bits
Rising V
Rising V
I
I
V
V
1.2V < V
V
1.2V < V
V
ON1, ON2, AINSEL and CLK/SEL
CLK/SEL = OUT
Not tested
Not tested
Current into OUT pin, CLK/SEL = GND
Current into OUT pin, CLK/SEL = OUT,
does not include switching losses
V
V
N-channel
P-channel
CLK/SEL = OUT
V
SINK
SOURCE
CLK
CLK
SINK
SINK
OUT
POKIN
OUT
OUT
LX
LX
CLK/SEL
= 0V, V
= V
= 400kHz, V
= 400kHz, 5ms conversion,
= 1mA
= 1mA, V
= 20µA, V
= V
= 2.7V, AINSEL and CLK/SEL
= 5.5V, AINSEL and CLK/SEL
= 1.5V
OUT
POKIN
ON2
OUT
OUT
= 1mA
POK
= 0V (Note 7)
, V
ON2
= V
< 5.5V, ON1 and ON2 (Note 8)
< 5.5V, ON1 and ON2 (Note 8)
= 5.5V
1-Cell to 3-Cell, High-Power,
POKIN
CONDITIONS
OUT
OUT
OUT
= V
AIN1
= 3.6V or
= 1V
OUT
= 5.5V
< 0.1V
= V
= 5.5V
AIN2
CLK/SEL = GND
CLK/SEL = OUT
CLK/SEL = OUT
MAX848
MAX849
MAX848
MAX849
= 2.5V
V
0.8V
0.8V
OUT
0.625
1.225
1100
MIN
2.95
600
120
250
260
200
200
80
0
OUT
OUT
- 0.4
1350
TYP
0.13
0.25
0.01
150
800
200
400
300
0.1
0.1
0.3
35
85
1
0.2V
0.2V
1.875
1.275
MAX
1000
1600
A
0.25
3.10
300
300
550
340
400
100
0.6
0.5
0.4
2.5
0.4
±4
90
20
20
50
90
2
1
1
= 0°C to +85°C,
OUT
OUT
UNITS
% FSR
kHz
kHz
mA
µA
µA
µA
µA
µA
µA
nA
µA
ns
ns
%
Ω
V
V
V
V
V
V
V
V
V
3