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MAX764CPAMAXIMN/a78avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764CPAMAXIM,MAXIMN/a25000avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764CPAMAXIM ?N/a25avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764CSAMAXN/a14avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764CSAMAXIMN/a1696avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764ESAMAXIMN/a25avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CPAMAXN/a1avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CPAMAXIN/a100avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CPAMAXIM ?N/a199avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CSAMAMIXN/a19avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CSAMAXN/a142avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CSAN/a113avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CSAMAXIM ?N/a135avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765CSAMAXIMN/a500avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765EPAMAXIM ?N/a5avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765ESAMAXIMN/a1069avai-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters


MAX764CPA ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC InvertersApplications A**Contact factory for availability and processing to MIL-STD-883.__________________Pi ..
MAX764CPA ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC InvertersFeaturesThe MAX764/MAX765/MAX766 inverting switching regu-' High Efficiency for a Wide Range of Loa ..
MAX764CPA ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Invertersapplications, so no MAX764CPA 0°C to +70°C 8 Plastic DIPmagnetics design is necessary.MAX764CSA 0°C ..
MAX764CPA+ ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low-IQ DC-DC Invertersapplications, so no MAX764CPA 0°C to +70°C 8 Plastic DIPmagnetics design is necessary.MAX764CSA 0°C ..
MAX764CSA ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC InvertersELECTRICAL CHARACTERISTICS(V+ = 5V, I = 0mA, C = 0.1µF, T = T to T , unless otherwise noted. Typic ..
MAX764CSA ,-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC InvertersFeaturesThe MAX764/MAX765/MAX766 inverting switching regu-' High Efficiency for a Wide Range of Loa ..
MB6M ,MINIATURE GLASS PASSIVATED SINGLE-PHASE BRIDGE RECTIFIERThermal Characteristics (TA = 25°C unless otherwise noted)Parameter Symbol MB2M MB4M MB6M UnitDevic ..
MB6S ,Bridge RectifiersThermal Characteristics (T = 25°C unless otherwise noted)AParameter Symbol MB2S MB4S MB6S UnitDevic ..
MB7117E , Schottky TTL 2048-Bit Bipolar Programmable Read-Only Memory
MB71A38-25 , PROGRAMMABLE SCHOTTKY 16384-BIT READ ONLY MEMORY


MAX764CPA-MAX764CSA-MAX764ESA-MAX765CPA-MAX765CSA-MAX765EPA-MAX765ESA
-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
_______________General Description
The MAX764/MAX765/MAX766 inverting switching regu-
lators are highly efficient over a wide range of load cur-
rents, delivering up to 1.5W. A unique, current-limited,
pulse-frequency-modulated (PFM) control scheme com-
bines the benefits of traditional PFM converters with the
benefits of pulse-width-modulated (PWM) converters.
Like PWM converters, the MAX764/MAX765/MAX766 are
highly efficient at heavy loads. Yet because they are PFM
devices, they use less than 120µA of supply current (vs.
2mA to 10mA for a PWM device).
The input voltage range is 3V to 16V. The output volt-
age is preset at -5V (MAX764), -12V (MAX765), or -15V
(MAX766); it can also be adjusted from -1V to -16V
using two external resistors (Dual ModeTM). The maxi-
mum operating VIN- VOUTdifferential is 20V.
These devices use miniature external components; their
high switching frequencies (up to 300kHz) allow for less
than 5mm diameter surface-mount magnetics. A stan-
dard 47µH inductor is ideal for most applications, so no
magnetics design is necessary.
An internal power MOSFET makes the MAX764/MAX765/
MAX766ideal for minimum component count, low- and
medium-power applications. For increased output drive
capability or higher output voltages, use the
MAX774/MAX775/MAX776 or MAX1774, which drive an
external power P-channel MOSFET for loads up to 5W.
________________________Applications

LCD-Bias Generators
Portable Instruments
LAN Adapters
Remote Data-Acquisition Systems
Battery-Powered Applications
____________________________Features
High Efficiency for a Wide Range of Load Currents250mA Output Current120µA Max Supply Current5µA Max Shutdown Current3V to 16V Input Voltage Range-5V (MAX764), -12V (MAX765), -15V (MAX766),
or Adjustable Output from -1V to -16V
Current-Limited PFM Control Scheme300kHz Switching FrequencyInternal, P-Channel Power MOSFET
______________Ordering Information
Ordering Information continued on last page.

* Dice are tested at TA= +25°C, DC parameters only.
**Contact factory for availability and processing to MIL-STD-883.
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,, Low IQDC-DC Inverters
________________________________________________________________Maxim Integrated Products1
__________________Pin Configuration
__________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.

19-0176; Rev 0; 6/94
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQDC-DC Inverters_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(V+ = 5V, ILOAD= 0mA, CREF= 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°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.
V+ to GND..............................................................-0.3V to +17V
OUT to GND...........................................................+0.5V to -17V
Maximum Differential (V+ to OUT) ......................................+21V
REF, SHDN, FB to GND ...............................-0.3V to (V+ + 0.3V)
LX to V+..................................................................+0.3V to -21V
LX Peak Current ...................................................................1.5A
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
CERDIP (derate 8.00mW/°C above +70°C) .................640mW
Operating Temperature Ranges
MAX76_C_A ........................................................0°C to +70°C
MAX76_E_A .....................................................-40°C to +85°C
MAX76_MJA ..................................................-55°C to +125°C
Maximum Junction Temperatures
MAX76_C_A/E_A ..........................................................+150°C
MAX76_MJA .................................................................+175°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQDC-DC Inverters
_______________________________________________________________________________________3
Note 1:
See Maximum Output Current vs. Supply Voltage graph in the Typical Operating Characteristics. Guarantees are based on
correlation to switch on-time, switch off-time, on-resistance, and peak current rating.
Note 2:
Circuit of Figure 2.
ELECTRICAL CHARACTERISTICS (continued)

(V+ = 5V, ILOAD= 0mA, CREF= 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
__________________________________________Typical Operating Characteristics

(V+ = 5V, VOUT= -5V, TA= +25°C, unless otherwise noted.)
MAX764
EFFICIENCY vs. LOAD CURRENT
MAX764-01
LOAD CURRENT (mA)
EFFICIENCY (%)100
MAX765
EFFICIENCY vs. LOAD CURRENT
MAX764-02
LOAD CURRENT (mA)
EFFICIENCY (%)100
MAX766
EFFICIENCY vs. LOAD CURRENT
MAX764-03
LOAD CURRENT (mA)
EFFICIENCY (%)100
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQDC-DC Inverters_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)

(V+ = 5V, VOUT= -5V, TA= +25°C, unless otherwise noted.)
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX764 -07
TEMPERATURE (°C)
SHUTDOWN CURRENT (
MAXIMUM SWITCH ON-TIME
vs. TEMPERATURE
MAX764 -08
TEMPERATURE (°C)
MAXIMUM SWITCH ON-TIME (
MINIMUM SWITCH OFF-TIME
vs. TEMPERATURE
MAX764 -09
TEMPERATURE (°C)
MINIMUM SWITCH OFF-TIME (
SWITCH ON/OFF-TIME RATIO
vs. TEMPERATURE
MAX764 -10
TEMPERATURE (°C)
SWITCH ON/OFF-TIME RATIO (
START-UP SUPPLY VOLTAGE
vs. OUTPUT CURRENT
MAX764 -11
OUTPUT CURRENT (mA)
START-UP SUPPLY VOLTAGE (V)100150200250300
10,000
LX LEAKAGE CURRENT
vs. TEMPERATURE

MAX764-12
TEMPERATURE (°C)
LX LEAKAGE CURRENT (nA)
MAXIMUM OUTPUT CURRENT
vs. SUPPLY VOLTAGE
MAX764 -04
SUPPLY VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (mA)
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX764 -05
SUPPLY VOLTAGE (V)
NO-LOAD SUPPLY CURRENT (
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
MAX764 -06
TEMPERATURE (°C)
NO-LOAD SUPPLY CURRENT (
110
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQDC-DC Inverters
_______________________________________________________________________________________5

SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX764-17
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
REFERENCE OUTPUT RESISTANCE
vs. TEMPERATURE
MAX764 -15
TEMPERATURE (°C)
REFERENCE OUTPUT RESISTANCE (
____________________________Typical Operating Characteristics (continued)
(V+ = 5V, VOUT= -5V, TA= +25°C, unless otherwise noted.)
LX ON-RESISTANCE
vs. TEMPERATURE
MAX764 -13
TEMPERATURE (°C)
LX ON-RESISTANCE (
MAX764
REFERENCE OUTPUT
vs. TEMPERATURE
MAX764 -16
TEMPERATURE (°C)
REFERENCE OUTPUT (V)
1.492
MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQDC-DC Inverters_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)

(V+ = 5V, VOUT= -5V, TA= +25°C, unless otherwise noted.)
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