Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS36063
Monolithic
DC-TO-DC CONVERTER CONTROL CIRCUIT
Systems
PRELIMINARY INFORMATION
FEATURES
APPLICATIONS
Wide Input Voltage Operating Range from 2.5V to 60V
Step-Up Converter
Low Standby Current
Step-Down Converter
Current Limiting
Voltage Inverting Application
Output Switch Current of 1.5A
Telephone Circuits
Output Voltage Adjustable from 1.25 to 40V
Monitors
Frequency of Operation to 100kHz
Battery Chargers
Thermal Protection
Portable Equipment
Enable Input Pin
GENERAL DESCRIPTION
The AMS36063 series is a control circuit containing the basic functions required for DC-to-DC converters. The device consists
of an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit
circuit, a driver, a high current output switch, a thermal protection circuit and a converter enable input. Designed specifically to
be incorporated in Step-Up, Step-Down and Voltage -Inverting applications, the AMS36063 requires a minimum number of
external components.
The AMS36063 is available in the 8-lead plastic SOIC and 8-lead plastic DIP packages.
ORDERING INFORMATION
PACKAGE TYPE
OPER. TEMP
8 LEAD PDIP
8 LEAD SOIC
RANGE
AMS36063P
AMS36063S
-40
C to +85
C
PIN CONNECTIONS
8 LEAD SOIC/ 8 LEAD PDIP
Top View
COMPARATOR
INVERTING
INPUT
SWITCH
COLLECTOR
GND
ENABLE
TIMING
CAPACITOR
V
CC
I
PK
SENSE
SWITCH
EMITTER
1
2
8
4
3
7
5
6
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS36063
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Power Supply Voltage, V
CC
60V
Driver Collector Voltage, V
C(driver)
60V
Comparator Input Voltage Range, V
IR
-0.3V to
+60V
Switch Current, I
SW
1.5A
Switch Collector Voltage, V
C(switch)
60V
Power Dissipation
(Note 3)
Switch Emitter Voltage, V
E(switch)
60V
Maximum Junction Temperature
+125
C
Switch Collector to Emitter Voltage, V
CE(switch)
60V
Storage Temperature
-65
C to +150
C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at V
CC
= 5.0V, -40
C
T
A
+85
C, unless otherwise noted.
PARAMETER
CONDITIONS
Min.
AMS36063
Typ.
Max.
Units
Oscillator
Charging Current
5.0V
V
CC
60V, T
A
= 25
C
20
35
50
A
Discharge Current
5.0V
V
CC
60V, T
A
= 25
C
150
200
250
A
Voltage Swing
T
A
= 25
C
0.5
V
P-P
Discharge to Charge Current
Ratio
I
PK(sense)
= V
CC
, T
A
= 25
C
6.0
_
Current Limit Sense Voltage
I
CHG
= I
DISCHG
, T
A
= 25
C
250
300
350
mV
Output Switch (Note 2)
Saturation Voltage, Darlington
Connection
I
SW
= 1.0A, V
C(driver)
= V
C(switch)
1.0
1.3
V
Saturation Voltage
I
SW
= 1.0A, I
C(driver)
= 50mA, (Forced
20)
0.45
0.7
V
DC Current Gain
I
SW
= 1.0A, V
CE
= 5.0V, T
A
= 25
C
35
120
Collector Off-State Current
V
CE
= 60V, T
A
= 25
C
10
nA
Comparator
Threshold Voltage
1.18
1.25
1.32
V
Threshold Voltage Line
Regulation
3.0V
V
CC
60V
0.04
0.2
mV/V
Input Bias Current
V
IN
= 0V
40
400
nA
Total Device
ENABLE Low
3.0V
V
CC
60V
2.15
1.90
V
ENABLE Low
3.0V
V
CC
60V
2.50
2.26
V
Supply Current
5.0V
V
CC
60V, I
PK(sense)
= V
CC
,
C
T
= 0.001
F, V pin 5 > V
th
,
Pin 2 = Gnd, Remaining pins open
2.4
4.0
mA
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test
conditions, see the Electrical Characteristics tables.
Note 2: To minimize power dissipation, low duty cycle pulse testing is used.
Note 3: Power dissipation at T
A
= 25
C is equal to 1.0W for the 8 lead P DIP package and 625mW for the SO-8 package. For operation at temperatures above
T
A
= 25
C derate the power dissipation at 10mW/
C.
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS36063
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE CHARACTERISTICS
OSCILLATOR TIMING CAPACITOR
OUTPUT SWITCH ON-OFF TIME (
s)
1.0
1000
Output Switch On-Off Time vs
Oscillator Timing Capacitor
10
10
100
0.1
1.0
100
0
0.8
3.2
0
5.0 10
20
30
40
50
60
SUPPLY VOLTAGE (V)
Standby Supply Current vs
Supply Voltage
SUPPLY CURRENT (mA)
1.6
2.4
V
CC
= 5.0V
I
PK(sense)
= V
CC
Pin 5 = GND
Emitter-Follower Configuration
Output Switch Saturation Voltage
vs Emitter Current
EMITTER CURRENT (A)
SATURATION VOLTAGE (V)
0
0.2 0.4 0.6
0.8
1.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.2 1.4
V
CC
= 5.0V
Pins 1,7 = V
CC
Pin 3,5 = GND
Common-Emitter Configuration
Output Switch Saturation Voltage
vs Collector Current
COLLECTOR CURRENT (A)
SATURATION VOLTAGE (V)
0
0.2 0.4 0.6
0.8
1.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.2 1.4
V
CC
= 5.0V
Pin 7 = V
CC
Pin 2,3,5 = GND
Darlington Connection
Forced Beta
20
C
T
= 0.001
F
I
PK(sense)
= V
CC
Pin 2 = GND
1.25V
REF
REG
8
7
6
5
+
-
4
1
2
3
COMP.
I
PK
C
T
OSC
R
S
Q
Q
2
Q
1
170
SWITCH
COLLECTOR
SWITCH
EMITTER
TIMING
CAPACITOR
GND
ENABLE
I
PK
SENSE
V
CC
COMPARATOR
INVERTING
INPUT
180
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS36063
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
8 LEAD SOIC PLASTIC PACKAGE (S)
8 LEAD PLASTIC DIP PACKAGE (P)
0-8 TYP
0.010-0.020
(0.254-0.508)
S (SO-8 ) AMS DRW# 042293
x 45
0.016-0.050
(0.406-1.270)
0.008-0.010
(0.203-0.254)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.053-0.069
(1.346-1.752)
0.050
(1.270)
TYP
0.150-0.157**
(3.810-3.988)
0.228-0.244
(5.791-6.197)
0.189-0.197*
(4.801-5.004)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1
2
3
4
8
7
6
5
0.045-0.065
(1.143-1.651)
0.2550.015*
(6.4770.381)
0.400*
(10.160)
MAX
1
2
3
4
8
7
6
5
0.1300.005
(3.3020.127)
0.0180.003
(0.4570.076)
0.1000.010
(2.5400.254)
(
8.255
)
+0.635
-0.381
0.325 +0.025
-0.015
0.009-0.015
(0.229-0.381)
0.300-0.325
(7.620-8.255)
0.065
(1.651)
TYP
0.005
(0.127)
MIN
0.125
(3.175)
MIN
0.015
(0.380)
MIN
*DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS.
MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.010" (0.254mm)
P (8L PDIP ) AMS DRW# 042294
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