MAX1687ESA Maxim Integrated Products, MAX1687ESA Datasheet - Page 2

• Manufacturer Part Number: MAX1687ESA
• Description: IC CONV DCDC GSM LIMIT 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX1687ESA

• 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: 8-SOIC (3.9mm Width)
• Power - Output: 471mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS
IN, ON, LX1, CHG, LIM, FB, OUT, REF to GND .......-0.3V to +7V
LX2 to GND ..............................................................-0.3V to +8V
IN, LX1 Average Current..........................................................1A
Continuous Power Dissipation (T
Step-Up DC-DC Converters with
Precise, Adaptive Current Limit for GSM
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
Typical values are at T
2
Input Voltage Range
Input Undervoltage Lockout
Output Voltage Range
Input Supply Current
Shutdown Delay
Reference Voltage
FB Set Voltage
FB Transconductance
I
Peak Current
Ripple Current
Sense Resistor
ON Input Low Voltage
ON Input High Voltage
Input Current
N-Channel On-Resistance
P-Channel On-Resistance
Precharge On-Resistance
LX2 Leakage Current
IN
CHG
TSSOP (derate 5.7mW/°C above +70°C) ....................457mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
_______________________________________________________________________________________
= V
Source Current
ON
PARAMETER
= +3V, V
LIM
A
= 1V (MAX1687), V
= +25°C.)
A
= +70°C)
SYMBOL
R
I
t
I
RIPPLE
DELAY
g
V
SENSE
PEAK
I
I
V
V
I
mFB
LIM
ON
REF
FB
IH
IL
CHG
IN rising, 1% hysteresis
V
Shutdown, V
V
I
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
REF
= 1V (MAX1688), V
FB
OUT
FB
FB
FB
LIM
LIM
LIM
IN
IN
IN
FB
ON
LIM
IN
IN
IN
IN
= 2.7V
= 6V
= 4.2V
= 2.7V
= 2.7V
= 4V, V
= V
= 1.5V
rising, 2% hysteresis
= 1.125V, V
= 0, V
= 1.5V
= 0 to 10µA
= 0 or 3V
= V
= V
= V
= 1V
= 0, ON = GND
LX2
CHG
CHG
CHG
OUT
FB
= 6V, V
IN
= 1V
= 0.65V
= 1V
= 0, V
= 3V (MAX1688)
= 4.2V, LX2 connected to LX1,
CONDITIONS
OUT
OUT
FB
OUT
= 3V (MAX1688)
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300° C
= 1.5V, V
T
T
= V
A
A
= 0
= +25°C
= 0°C to +85°C
ON
= 0
OUT
= 6V, T
A
= 0°C to +85°C, unless otherwise noted.
1.225
1.212
0.744
V
0.18
0.46
MIN
170
2.7
2.4
0.7
1.8
1.5
60
REF
1.250
TYP
1.25
0.05
0.02
0.02
0.05
110
200
2.5
1.2
0.2
0.8
0.5
0.1
0.4
0.3
30
2
3
1.275
1.288
0.856
MAX
0.22
0.54
0.18
230
2.6
1.8
0.6
0.2
0.1
0.1
0.8
0.7
10
70
10
6
6
4
2
UNITS
mmho
mA
mA
µA
ms
µA
µA
µA
A
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V