MAX1705EEE+T Maxim Integrated Products, MAX1705EEE+T Datasheet - Page 6

• Manufacturer Part Number: MAX1705EEE+T
• Description: IC DC-DC CONV LN 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX1705EEE+T

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5 ~ 5.5 V
• Current - Output: 850mA
• Frequency - Switching: 300kHz
• Voltage - Input: 0.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 696mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
(Circuit of Figure 2, T
6
100
100
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
0.1
0.1
0.01
EFFICIENCY vs. OUTPUT CURRENT
EFFICIENCY vs. OUTPUT CURRENT
A.1
A.1
NO-LOAD STARTUP:
1.0V AT -40°C
0.79 AT +25°C
0.64V AT +85°C
CONSTANT-CURRENT LOAD
V
L = 10µH
D1 = MBR0520L
B.1
OUT
B.1
STARTUP INPUT VOLTAGE
= 3.3V
0.1
1
1
vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
(V
(V
MAX1705
MAX1706
A
OUT
OUT
MAX1705
1
= +25°C, unless otherwise noted.)
10
10
= 3.3V)
= 3.3V)
T
A
10
= +85°C
A.2
L = 10µH
V
A: V
B: V
1: PFM MODE
2: PWM MODE
A.2
T
L = 22µH
V
A: V
B: V
1: PFM MODE
2: PWM MODE
OUT
A
OUT
100
100
T
= +25°C
IN
IN
A
IN
IN
= 3.3V
= 0.9V
= 2.7V
= -40°C
100
= 3.3V
= 0.9V
= 2.7V
B.2
B.2
1000
1000
1000
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
12
11
10
9
8
7
6
5
4
3
2
1
0
0.1
0.1
0
EFFICIENCY vs. OUTPUT CURRENT
EFFICIENCY vs. OUTPUT CURRENT
0.5
B.1
NO-LOAD SUPPLY CURRENT
1.0
C.1
C.1
1
1
PFM MODE
vs. INPUT VOLTAGE
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
1.5
A.1
INPUT VOLTAGE (V)
A.1
(V
(V
MAX1706
MAX1705
2.0
PWM MODE
OUT
OUT
B.1
10
10
2.5
Typical Operating Characteristics
= 5V)
= 5V)
3.0
A.2
L = 10µH
V
A: V
C: V
E: V
1: PFM MODE
2: PWM MODE
OUT
3.5
L = 22µH
V
A: V
B: V
C: V
1: PFM MODE
2: PWM MODE
V
L = 10µH
A.2
OUT
100
100
OUT
IN
IN
IN
= 5V
IN
IN
IN
= 0.9V
= 3.6V
4.0
= 2.4V
B.2
B.2
= 5V
= 3.3V
= 0.9V
= 2.4V
= 3.6V
4.5
C.2
C.2
1000
1000
5.0
1000
700
600
500
400
300
200
100
900
800
700
600
500
400
300
200
100
140
120
100
80
60
40
20
0
0
0
0
0
0
L = 22µH
L = 10µH
0.5
0.5
MAXIMUM OUTPUT CURRENT
LINEAR-REGULATOR DROPOUT
MAXIMUM OUTPUT CURRENT
V
VOLTAGE vs. LOAD CURRENT
PWM MODE
V
OUT
OUT
40
1.0
1.0
V
= 3.3V
vs. INPUT VOLTAGE
PWM MODE
LDO
vs. INPUT VOLTAGE
= 3.3V
LOAD CURRENT (mA)
1.5
INPUT VOLTAGE (V)
1.5
INPUT VOLTAGE (V)
= 2.5V
MAX1706
MAX1705
80
V
V
2.0
2.0
OUT
OUT
= 3.3V
= 3.3V
2.5
2.5
V
LDO
120
3.0
= 3.3V
3
V
V
OUT
V
PFM MODE
PFM MODE
LDO
V
V
3.5
3.5
OUT
OUT
160
OUT
= 5V
= 5V
= 5V
= 5V
= 5V
4.0
4
4.5
200
4.5