MAX1688EUE Maxim Integrated Products, MAX1688EUE Datasheet - Page 4

• Manufacturer Part Number: MAX1688EUE
• Description: IC CONV DCDC LIMIT GSM 16-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX1688EUE

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 6 V
• Current - Output: 2.5A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Power - Output: 457mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Step-Up DC-DC Converters with Precise,
Adaptive Current Limit for GSM
4
_____________________________ Typical Operating Characteristics (continued)
(
V
IN
800
700
600
500
400
300
200
100
_______________________________________________________________________________________
0
= +3.3V, V
15
MAX1688 PEAK BATTERY CURRENT
20
vs. R
1.253
1.251
1.249
1.247
1.245
800
750
700
650
600
550
500
450
400
350
300
OUT
CHG
100
-40
REFERENCE VOLTAGE vs. TEMPERATURE
25
R
= 5V, V
CHG
(1A GSM LOAD)
-20
150
(k )
(V
I
30
PEAK
IN
LIM
0
200
TEMPERATURE (°C)
= 3.3V, V
V
OUT
vs. V
MAX1688
= 1V, Figures 6b and 7, T
20
35
DROOP (mV)
250
OUT
40
OUT
DROOP
40
300
= 5V)
60
R
CHG
350
= 40.2k
80
4.5
4.0
3.5
3.0
2.5
2.0
1.5
100
400
-40
NO-LOAD BATTERY INPUT CURRENT vs.
TEMPERATURE (V
A
-20
= +25°C, unless otherwise noted.
0
TEMPERATURE (°C)
20
V
OUT
IN
V
IN
= 6V
40
= 5V
= 5V, V
V
V
IN
IN
= 3.3V
= 2.7V
60
LIM
80
= 1V )
1200
1000
800
600
400
200
800
700
600
500
400
300
200
100
100
0
0
SWITCHING FREQUENCY vs. INDUCTANCE
15
1
MAX1688 PEAK INDUCTOR CURRENT
)
1.230
1.225
1.250
1.245
1.240
1.235
1.220
1.215
1.210
1.205
1.200
I
20
LOAD
vs. R
(V
IN
1
= 100mA, V
INDUCTANCE ( H)
= 3.3V, V
CHG
REFERENCE VOLTAGE vs. REFERENCE
25
CURRENT (V
R
(1A GSM LOAD)
CHG
10
(k )
OUT
30
LIM
10
= 5V,
IN
= 1V)
I
REF
= 3.3V, V
35
( A)
100
100
40
OUT
= 5V)
1000