MAX1705 Maxim, MAX1705 Datasheet - Page 2

• Manufacturer Part Number: MAX1705
• Description: 1- to 3-Cell / High-Current / Low-Noise / Step-Up DC-DC Converters with Linear Regulator
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
ONA, ONB, FBLDO, OUT, POUT to GND...................-0.3V to 6V
PGND to GND.....................................................................±0.3V
POUT to OUT ......................................................................±0.3V
LX to PGND ............................................-0.3V to (V
CLK/SEL, REF, FB, TRACK, LDO,
LDO Short Circuit .......................................................Continuous
1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
LX = open, T
2
DC-DC CONVERTER
REFERENCE
Minimum Start-Up Voltage
Minimum Operating Battery
Voltage
FB Regulation Voltage
FB Input Current
OUT Adjust Range
Load Regulation
OUT Voltage in Track Mode
Frequency in Start-Up Mode
Start-Up to Normal Mode
Transition Voltage
Supply Current in Shutdown
Supply Current in
Low-Power Mode
Supply Current in
Low-Noise Mode
Reference Output Voltage
Reference Load Regulation
Reference Supply Regulation
OUT
LBN, LBP, LBO to GND.......................-0.3V to (V
_______________________________________________________________________________________
= V
PARAMETER
POUT
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= V
LBP
= 3.6V, CLK/SEL = FB = LBN = LBO = ONA =
SYMBOL
I
I
I
OUT
OUT
OUT
f
LX
T
(Note 1)
CLK/SEL = OUT
V
MAX1705, 0A ≤ I
MAX1706, 0A ≤ I
CLK/SEL = OUT
TRACK = V
V
(Note 2)
ONA = GND, ONB = OUT, measure I
CLK/SEL = GND, V
no load
CLK/SEL = OUT
I
-1µA < I
2.5V < V
REF
A
FB
POUT
POUT
= +25°C, I
OUT
= 1.5V
= 0µA
= V
REF
+ 0.3V)
+ 0.3V)
OUT
OUT
LDO
< 50µA
< 5.5V
LOAD
= 1.5V
CONDITIONS
> 2.3V
LX
LX
V
FB = GND (LX switching)
FB
< 1mA, Figure 2
FB
≤ 0.5A;
≤ 0.25A;
= V
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
= V
FBLDO
ONB = TRACK = GND, REF = open (bypassed with 0.22µF),
QSOP (derate 8.70mW/°C above +70°C) ...................696mW
FBLDO
= 1.5V,
A
= 1.5V, no load
= +25°C.)
OUT
1.238
+ 0.2
1.219
V
2.00
MIN
2.5
LDO
40
A
= +70°C)
1.233
1.250
V
+ 0.3
TYP
0.01
0.65
2.15
150
100
180
0.9
0.7
2.1
0.2
LDO
1
4
V
+ 0.4
1.247
1.262
MAX
1.25
2.30
300
190
360
LDO
1.1
5.5
50
20
15
5
UNITS
kHz
mA
mV
mV
nA
µA
µA
µA
%
V
V
V
V
V
V
V