MAX4193 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – CMOS Micropower Step-Up Switching Regulator

19-0915; Rev 2; 9/08
CMOS Micropower Step-Up
Switching Regulator
General Description
Maxim’s MAX630 and MAX4193 CMOS DC-DC regula-
tors are designed for simple, efficient, minimum-size
DC-DC converter circuits in the 5mW to 5W range. The
MAX630 and MAX4193 provide all control and power
handling functions in a compact 8-pin package: a
1.31V bandgap reference, an oscillator, a voltage com-
parator, and a 375mA N-channel output MOSFET. A
comparator is also provided for low-battery detection.
Operating current is only 70µA and is nearly indepen-
dent of output switch current or duty cycle. A logic-level
input shuts down the regulator to less than 1µA quies-
cent current. Low-current operation ensures high effi-
ciency even in low-power battery-operated systems.
The MAX630 and MAX4193 are compatible with most
battery voltages, operating from 2.0V to 16.5V.
The devices are pin compatible with the Raytheon bipo-
lar circuits, RC4191/2/3, while providing significantly
improved efficiency and low-voltage operation. Maxim
also manufactures the MAX631, MAX632, and MAX633
DC-DC converters, which reduce the external compo-
nent count in fixed-output 5V, 12V, and 15V circuits.
See Table 2 at the end of this data sheet for a summary
of other Maxim DC-DC converters.
Applications
+5V to +15V DC-DC Converters
High-Efficiency Battery-Powered DC-DC
Converters
+3V to +5V DC-DC Converters
9V Battery Life Extension
Uninterruptible 5V Power Supplies
5mW to 5W Switch-Mode Power Supplies
Typical Operating Circuit
+5V IN
470μH
6
I_C
8 _LBD
5
+V_S
L_X ³
MAX630
1 _LBR
V_FB ⁷
+15V
OUT
C_X
GND
2
47pF
4
+5 TO +15V CONVERTER
Features
♦ High Efficiency—85% (typ)
♦ 70µA Typical Operating Current
♦ 1µA Maximum Quiescent Current
♦ 2.0V to 16.5V Operation
♦ 525mA (Peak) Onboard Drive Capability
♦ ±1.5% Output Voltage Accuracy (MAX630)
♦ Low-Battery Detector
♦ Compact 8-Pin Mini-DIP and SO Packages
♦ Pin Compatible with RC4191/2/3
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX630CPA
0°C to +70°C
8 PDIP
MAX630CSA
0°C to +70°C
8 SO
MAX630CJA
0°C to +70°C
8 CERDIP
MAX630EPA
-40°C to +85°C
8 PDIP
MAX630ESA
-40°C to +85°C
8 SO
MAX630EJA
-40°C to +85°C
8 CERDIP
MAX630MJA
-55°C to +125°C
8 CERDIP**
MAX630MSA/PR
-55°C to +125°C
8 SO†
MAX630MSA/PR-T -55°C to +125°C
8 SO†
MAX4193C/D
0°C to +70°C
Dice*
MAX4193CPA
0°C to +70°C
8 PDIP
MAX4193CSA
0°C to +70°C
8 SO
MAX4193CJA
0°C to +70°C
8 CERDIP
MAX4193EPA
-40°C to +85°C
8 PDIP
MAX4193ESA
-40°C to +85°C
8 SO
MAX4193EJA
-40°C to +85°C
8 CERDIP
MAX4193MJA
-55°C to +125°C
8 CERDIP**
*Dice are specified at T_A = +25°C. Contact factory for dice
specifications.
**Contact factory for availability and processing to MIL-STD-883.
†Contact factory for availibility.
Pin Configuration
TOP VIEW
LBR 1
C_X 2
L_X 3
GND 4
MAX630
MAX4193
8 LBD
7 V_FB
6 I_C
5 +V_S
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