Operating Temperature Range .............................40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10sec) ............................. +300°C
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
INP1
= V
INP2
= V
INP3
= V
IN
= 3.6V, V
LBI
= 1.1V, V
DBI
= 1.35V,
MR
= ON2 = IN, PGM3 = GND, Circuit of Figure 1, T
A
= -40°C to
+85°C unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
INP1, INP2, INP3,
IN Supply Voltage Range
Undervoltage
Lockout Threshold
Quiescent Current
(I
INP1
+ I
INP2
+ I
INP3
+ I
IN
)
CONDITIONS
INP1, INP2, INP3, IN must be connected together
externally
V
IN
rising
V
IN
falling
ON2 = IN, no load
ON2 = GND, no load
V
DBI
< 1.2 V (shutdown)
LX1-3 = GND
3.6V ≤ V
INP1
≤ 5.5V, Load = 0 to 900mA
3.234
200
55
Load = 800mA, Note 1
I
LX1
= 180mA
I
LX1
= 180mA, V
INP1
= 2.6V
I
LX1
= 180mA
0.40
1.15
0.115
25
2.6V ≤ V
INP1
≤ 5.5V (Note 2)
V
INP1
= 5.5V, LX1= GND or INP1, V
OUT1
= 3.6V
V
INP2
= 4.2V
0.9
-20
0
0.1
+20
100
MIN
2.6
2.25
2.2
2.40
2.35
485
335
5
20
TYP
MAX
5.5
2.55
2.525
UNITS
V
V
µA
µA
µA
SYNCHRONOUS BUCK PWM REGULATOR 1 (REG1)
OUT1 Voltage Accuracy
OUT1 Input Resistance
Error-Amp Transconductance
Dropout Voltage
P-Channel On-Resistance
N-Channel On-Resistance
Current-Sense Transresistance
P-Channel
Current-Limit Threshold
P-Channel Pulse-Skipping
Current Threshold
N-Channel Zero
Crossing Comparator
OUT1 Maximum
Output Current
LX1 Leakage Current
LX1 Duty-Cycle Range
3.3
400
95
250
0.25
0.3
0.2
0.47
1.275
0.140
55
135
425
0.4
0.5
0.35
0.54
1.45
0.160
75
3.366
V
kΩ
µS
mV
Ω
Ω
Ω
V/A
A
A
mA
A
µA
%
www.maximintegrated.com
Maxim Integrated
│
2
MAX1702B
Triple Output Power Management IC for
Microprocessor-Based Systems
Electrical Characteristics (continued)
(V
INP1
= V
INP2
= V
INP3
= V
IN
= 3.6V, V
LBI
= 1.1V, V
DBI
= 1.35V,
MR
= ON2 = IN, PGM3 = GND, Circuit of Figure 1, T
A
= -40°C to
+85°C unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
OUT1 Discharge Resistance
CONDITIONS
V
OUT1
= 3.3V, V
DBI
= 1V
2.6V ≤ V
INP2
≤ 5.5V, load = 0 to 400mA
V
FB
= 0.7V
150
Load = 400mA (Note 1)
I
LX2
= 180mA
I
LX2
= 180mA, V
INP2
= 2.6V
I
LX2
= 180mA
0.40
1.15
0.115
25
2.6V ≤ V
INP2
≤ 5.5V (Note 2)
V
INP2
= 5.5V, LX2 = GND or INP2,V
FB2
= 1V
V
INP2
= 4.2V
V
LX2
= V
DBI
= 1V
PGM3 = GND, 3.6V ≤ V
INP3_
≤ 5.5V,
Load = 0 to 800mA
OUT3 Voltage Accuracy
PGM3 = REF, 3.6V≤ V
INP3_
≤ 5.5V,
Load = 0mA to 800mA
PGM3 = IN, 3.6V≤ V
INP3_
≤ 5.5V,
Load = 0mA to 800mA
PGM3 = GND
OUT3 Input Resistance
PGM3 = REF
PGM3 = IN
PGM3 = GND
Error-Amp Transconductance
Dropout Voltage
P-Channel On-Resistance
N-Channel On-Resistance
PGM3 = REF
PGM3 = IN
Load = 800mA, Note 1
I
LX3
= 180mA
I
LX3
= 180mA, V
INP3
= 2.6V
I
LX3
= 180mA
0.4
-20
0
300
0.1
20
100
0.686
MIN
TYP
300
(Note 3)
0.7
1
250
150
0.25
0.3
0.2
0.47
1.275
0.140
55
0.714
150
350
250
0.4
0.5
0.35
0.54
1.45
0.160
75
MAX
UNITS
Ω
SYNCHRONOUS BUCK REGULATOR 2 (REG2)
FB2 Regulation Voltage
FB Input Current
Error-Amp Transconductance
Dropout Voltage
P-Channel On-Resistance
N-Channel On-Resistance
Current-Sense Transresistance
P-Channel
Current-Limit Threshold
P-Channel Pulse-Skipping
Current Threshold
N-Channel Zero-Crossing
Comparator
OUT2 Maximum Output
LX2 Leakage Current
LX2 Duty-Cycle Range
LX2 Discharge Resistance
V
nA
µS
mV
Ω
Ω
Ω
V/A
A
mA
mA
A
µA
%
Ω
SYNCHRONOUS BUCK REGULATOR 3 (REG3)
1.764
2.45
3.234
340
200
160
105
75
55
1.8
2.5
3.3
650
400
320
175
125
95
220
0.25
0.3
0.2
245
175
135
400
0.4
0.5
0.35
mV
Ω
Ω
Ω
μs
kΩ
1.836
2.55
3.366
V
www.maximintegrated.com
Maxim Integrated
│
3
MAX1702B
Triple Output Power Management IC for
Microprocessor-Based Systems
Electrical Characteristics (continued)
(V
INP1
= V
INP2
= V
INP3
= V
IN
= 3.6V, V
LBI
= 1.1V, V
DBI
= 1.35V,
MR
= ON2 = IN, PGM3 = GND, Circuit of Figure 1, T
A
= -40°C to
+85°C unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Current-Sense Transresistance
P-Channel
Current-Limit Threshold
P-Channel Pulse-Skipping
Current Threshold
N-Channel Zero-Crossing
Comparator
OUT3 Maximum Output Current
LX3 Leakage Current
LX3 Duty-Cycle Range
OUT3 Discharge Resistance
REFERENCE
REF Output Voltage
REF Load Regulation
REF Line Regulation
OSCILLATOR
Switching Frequency
THERMAL SHUTDOWN
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
SUPERVISORY/MANAGEMENT FUNCTIONS
Reset Timeout
OUTOK Trip Threshold
OUTOK,
LBO
Minimum Assertion Time
LBI Input Threshold
LBI Input Bias Current
V
LBI
falling
V
LBI
rising
V
LBI
= 0.95V
V
DBI
falling, T
A
= 0°C to +85°C
DBI Input Threshold
V
DBI
rising, T
A
= 0°C to +85°C
V
DBI
falling, T
A
= -40°C to +85°C
V
DBI
rising, T
A
= -40°C to +85°C
DBI Input Bias Current
V
DBI
= 1.25V
1.2103
1.2345
1.198
1.221
MR
rising to
RSO
rising
V
FB2
rising
V
FB2
falling
55
94
91
107
0.98
1.00
65.5
95.5
92.5
126
1.000
1.020
0.02
1.235
1.2597
1.235
1.260
0.01
75
97.5
94
145
1.02
1.04
0.1
1.2597
1.2849
1.273
1.298
0.1
µA
V
ms
%
µs
V
µA
T
J
rising
160
15
°C
°C
0.85
1
1.15
MHz
10µA < I
REF
< 100µA
2.6V < V
BATT
< 5.5V
1.225
1.25
2.5
0.6
1.275
6.25
5
V
mV
mV
2.6V ≤ V
INP3_
≤ 5.5V (Note 2)
V
INP3
= 5.5V, LX3 = GND or INP3, V
OUT3
= 3.6V
V
INP3
= 4.2V
V
OUT3
= 3.3V, V
DBI
= 1V
CONDITIONS
MIN
0.40
1.15
0.115
25
0.8
-20
0
300
(Note 3)
0.1
+20
100
TYP
0.47
1.275
0.140
55
MAX
0.54
1.45
0.160
75
UNITS
V/A
A
A
mA
A
µA
%
Ω
www.maximintegrated.com
Maxim Integrated
│
4
MAX1702B
Triple Output Power Management IC for
Microprocessor-Based Systems
Electrical Characteristics (continued)
(V
INP1
= V
INP2
= V
INP3
= V
IN
= 3.6V, V
LBI
= 1.1V, V
DBI
= 1.35V,
MR
= ON2 = IN, PGM3 = GND, Circuit of Figure 1, T
A
= -40°C to
+85°C unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
RSO, LBO,
OUTOK
Output Low Level
RSO, LBO,
OUTOK
Output High Leakage Current
ON2,
MR,
Input High Level
ON2,
MR,
Input Low Level
ON2,
MR,
PGM3, Input Leakage
Current
PGM3 Selection Threshold
CONDITIONS
2.6V ≤ V
IN_
≤ 5.5V, sinking 1mA
V
IN_
= 1V, sinking 100µA
V
RSO
= V
LBO
= V
OUTOK
= 5.5V
2.6V ≤ V
IN_
≤ 5.5V
2.6V ≤ V
IN_
≤ 5.5V
V
ON2
= V
MR
= V
PGM3
= GND, 5.5V
REG3 target = 1.8V, IN = 2.6V to 5.5V
REG3 target = 2.5V, IN = 2.6V to 5.5V
REG3 target = 3.3V, IN = 2.6V to 5.5V
1.1
REF
V
IN_
- 0.25
-1
1.6
0.4
+1
0.4
1.4
V
MIN
TYP
MAX
0.4
0.4
0.1
UNITS
V
µA
V
V
µA
Note 1:
Dropout voltage is not tested. Guaranteed by P-channel switch resistance and assumes a 72mΩ (REG1 and REG3) or
162mΩ (REG2) maximum ESR of inductor.
Note 2:
The maximum output current is guaranteed by the following equation:
V
(1
−
D )
I
LIM
−
OUT
2
× ƒ ×
L
I
OUT ( MAX )
=
(1
−
D )
1
+
( R
N
+
R
L
)
2
× ƒ ×
L
where:
D
=
V
OUT
+
I
OUT ( MAX )
( R
N
+
R
L
)
V
IN
+
I
OUT ( MAX )
( R
N
+
R
P
)
and: R
N
= N-channel synchronous rectifier RDSON
R
P
= P-channel power switch RDSON
R
L
= external inductor ESR
I
OUT(MAX)
= maximum required load current
ƒ = operating frequency minimum
L = external inductor value
Note 3:
Specified resistance is in series with an internal diode to LX2.
Note 4:
Specifications to -40°C are guaranteed by design and not production tested.
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