MAX1688EUE Maxim Integrated Products, MAX1688EUE Datasheet

IC CONV DCDC LIMIT GSM 16-TSSOP

MAX1688EUE

Manufacturer Part Number
MAX1688EUE
Description
IC CONV DCDC LIMIT GSM 16-TSSOP
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet
1.MAX1687ESA.pdf (12 pages)

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MAX1688EUE
Manufacturer:
MAXIM
Quantity:
16
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX1688EUE
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX1688EUE+
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MAX1688EUE-T
Manufacturer:
MAXIM
Quantity:
3
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX1688EUE-T
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX1687/MAX1688 step-up DC-DC converters deliv-
er up to 2W from a single Li-Ion or three NiMH cells. The
devices are ideal for burst-load applications such as GSM
cell phones and wireless LANs, where the RF power
amplifiers require short, high current bursts. The
MAX1687/MAX1688 reduce battery surge current by slow-
ly charging a reservoir capacitor, which supplies the nec-
essary peak energy for the load current burst. As a result,
the peak battery current is limited, thus maximizing battery
life and minimizing battery voltage sag and transient dips.
An internal synchronous rectifier provides over 90% con-
version efficiency and eliminates the need for an external
Schottky diode. A logic shutdown mode reduces the shut-
down current to only 3µA. The devices can be disabled
during current bursts (RF transmit mode) to eliminate
switching noise.
The switching frequency of the MAX1687/MAX1688, con-
trolled by the selected inductor, can exceed 1MHz. Two
external resistors set the output voltage from 1.25V to 6V.
The MAX1687 controls peak battery current, while the
MAX1688 features a more advanced, adaptive constant-
recharge-time algorithm that maximizes battery life. The
MAX1687/MAX1688 are available in thin 16-pin TSSOP
(1.1mm max height) or standard 8-pin SO packages.
For small orders, phone 1-800-835-8769.
19-1426; Rev 0; 2/99
†
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
Pg
Pin Configurations continued at end of data sheet.
[ ] ARE FOR MAX1688
TOP VIEW
GSM Phones
Wireless Handsets
PC Cards (PCMCIA)
LIM [CHG]
N.C.
LX1
LX1
REF
FB
IN
IN
________________________________________________________________ Maxim Integrated Products
Precise, Adaptive Current Limit for GSM
1
2
3
4
5
6
8
7
General Description
MAX1687
MAX1688
TSSOP
Pin Configurations
Applications
16
15
14
13
12
11
10
9
OUT
OUT
LX2
LX2
PGND
PGND
AGND
ON
Step-Up DC-DC Converters with
* Ug.
MAX1687EUE
MAX1687ESA
MAX1688EUE
MAX1688ESA
3 ALKALINE
Low 450mA Peak Battery Current
Provides 2A, 5V GSM Burst
90% Efficiency
Internal Power MOSFETs and Current-Sense
Resistor
Output Disconnects from Input During Shutdown
3µA Shutdown Current
Precise Voltage-Controlled Current Limit
(MAX1687)
Adaptive Constant-Recharge-Time Capability
(MAX1688)
1.25V to 6V Adjustable Output
2.7V to 6V Input Range
(1 Li-Ion cell or 3 NiMH cells)
Switching Frequency Can Exceed 1MHz
Standby Mode Disables DC-DC During
Transmission Burst
Low Inrush Current at Start-Up
( ) ARE FOR MAX1687
[ ] ARE FOR MAX1688
1 Li-lon
3 NiMH
OFF
PART*
CONTROL INPUT
OR
OR
2.7V TO 6V
0 TO 1V
ON
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
(LIM)
ON
REF
IN
Ordering Information
LX1
MAX1687
MAX1688
GND
LX2
[CHG]
OUT
FB
16 TSSOP
16 TSSOP
8 SO
8 SO
PIN-PACKAGE
Features
UP TO 6V
V
OUT
1

Related parts for MAX1688EUE

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2831EVKIT+
Part Number:
MAX2831EVKIT+
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products
MAX4888CETI+
Part Number:
MAX4888CETI+
Description:
QFN/E/DUAL PCIE/SATA HIGH SPEED SWITCH WITH INTEGRATED BIAS RESISTOR
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX4888BETI.pdf (10 pages)

MAX1688EUE Summary of contents

Page 1

... Adjustable Output 2. Input Range (1 Li-Ion cell or 3 NiMH cells) Switching Frequency Can Exceed 1MHz Standby Mode Disables DC-DC During Transmission Burst Low Inrush Current at Start-Up PART* MAX1687EUE MAX1687ESA Applications MAX1688EUE MAX1688ESA * Ug. 2. Li-lon 16 OUT OR 15 OUT 3 NiMH OR 14 ...

Page 2

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM 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 ...

Page 3

Precise, Adaptive Current Limit for GSM ELECTRICAL CHARACTERISTICS ( +3V (MAX1687 LIM (Note 1) PARAMETER SYMBOL Input Voltage Range Input Undervoltage Lockout Output Voltage Range Input Supply Current I SHDN Shutdown ...

Page 4

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM _____________________________ Typical Operating Characteristics (continued +3.3V 5V 1V, Figures 6b and OUT LIM MAX1688 PEAK BATTERY CURRENT vs. R (1A ...

Page 5

Precise, Adaptive Current Limit for GSM ( V = +3.3V 5V 1V, Figures 6b and OUT LIM SWITCHING WAVEFORMS (FIXED I = 300mA) LOAD 500mA/div 100mV/div 500 s/div MAX1688 SWITCHING WAVEFORMS (GSM PULSED ...

Page 6

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM PIN MAX1687 MAX1688 SO TSSOP SO TSSOP — — — — 7 — — 8 — ...

Page 7

Precise, Adaptive Current Limit for GSM (LIM) [CHG ARE FOR MAX1687 [ ] ARE FOR MAX1688 (ALSO DASHED LINES) Figure 1. Functional Diagram When starting up, the MAX1687/MAX1688 employ four successive ...

Page 8

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM I PEAK SET LIM CHG I - 200mA PEAK TIME ( ) ARE FOR MAX1688 Figure 2. Hysteretic Inductor Current OUT MAX1687 MAX1688 ...

Page 9

Precise, Adaptive Current Limit for GSM a) MAX1687 LIM REF DAC c) REF R3 MAX1687 LIM R4 Figure 5. Current-Limit Adjust To set the current limit, apply a voltage LIM. The current limit is 200mA ...

Page 10

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM Output (Reservoir) Capacitor The value of the output capacitor determines the amount of power available to deliver to the power amplifier during the RF burst. A larger output capacitor with ...

Page 11

Precise, Adaptive Current Limit for GSM 0.1 F OFF *TSSOP PACKAGE ONLY Figure 6b. MAX1687 Typical Application Circuit (Fixed Non-Pulsed Load 2. 0 CHG OFF 40.2k Figure 7. MAX1688 ...

Page 12

Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM Pin Configurations (continued) TOP VIEW IN 1 LX1 2 MAX1687 MAX1688 LIM [CHG ARE FOR MAX1688 12 ______________________________________________________________________________________ Table 1. Component Suppliers COMPANY AVX ...

Related keywords