TI 78ST205VC

(800) 531-5782
For assistance or to order, call
78ST200
Series
2 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
•
•
•
•
•
•
High Efficiency > 82%
Wide Input Range
Self-Contained Inductor
Short-Circuit Protection
Over-Temperature Protection
Fast Transient Response
Pin-Out Information
The 78ST200 is a series of wide
input voltage, 3 terminal Integrated
Switching Regulators (ISRs). Employing a ceramic substrate, these ISRs
have a maximum output current of 2A.
The output voltage is laser trimmed
for high accuracy.
The 78ST200 series regulators
have internal short-circuit and overtemperature protection and may be
used in a wide variety of applications.
Ordering Information
78ST2 XX
Pin No. Function
Standard Application
Vin
1
78ST200
C1
2
C2
GND
Y C
1
Vin
2
GND
Output Voltage
Package Suffix
3
Vout
33 = 3.3 Volts
35 = 3.45 Volts
05 = 5.0 Volts
V = Vertical Mount
S = Surface Mount
H = Horizontal
Mount
Vout
3
Revised 6/30/98
+
GND
(For dimensions and PC board
layout see Package Style 500.)
C1 = Optional 1µF ceramic
C2 = Required 100µF electrolytic
Specifications
78ST200 SERIES
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
0.1*
—
2.0
A
Input Voltage Range
Vin
Io = 0.1 to 3.0A
7
8
—
—
15
20
V
V
Output Voltage Tolerance
∆V o
—
±1.0
±2.0
%Vo
%Vo
Vo < 3.5V
Vo = 5.0V
Over Vin range, Io = 2.0A
Ta = 0°C to +60°C
Line Regulation
Regline
Over Vin range
—
±0.4
±0.8
Load Regulation
Regload
0.1 ≤ Io ≤ 2.0A
—
±0.2
±0.4
%Vo
Ripple/Noise
Vn
Vin = Vin min, Io = 2.0A
—
1
—
%Vo
Transient Response
(with 100µF output cap)
ttr
50% load change
Vo over/undershoot
—
100
5.0
—
µSec
%Vo
Efficiency
η
Vin = 9V, Io = 2.0A, Vo = 5V
—
82
—
%
Switching Frequency
ƒo
Over Vin and Io ranges
0.95
1.0
1.05
MHz
Absolute Maximum
Operating Temperature Range
Ta
—
-40
—
+85
°C
Recommended Operating
Temperature Range
Ta
Free Air Convection, (40-60LFM)
Over Vin and Io ranges
-40
—
Thermal Resistance
θja
Free Air Convection, (40-60LFM)
—
38
—
°C/W
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
—
Per Mil-STD-883D, Method 2002.3
—
500
—
G’s
Mechanical Vibration
—
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
5
—
G’s
Weight
—
—
—
7
—
Grams
+85**
* ISR will operate down to no load with reduced specifications.
** See Thermal Derating chart.
Note: The 78ST200 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
°C
For assistance or to order, call
(800) 531-5782
78ST200
CHARACTERISTIC
DATA
78ST233_ 3.3 VDC
78ST205_ 5.0 VDC
(See Note 1)
(See Note 1)
Efficiency vs Output Current
Efficiency vs Output Current
100
100
90
Vin
80
7.0V
8.0V
10.0V
70
12.0V
15.0V
60
Efficiency (%)
Efficiency (%)
90
50
Vin
80
7.5V
9.0V
70
12.0V
15.0V
20.0V
60
50
40
40
0.0
0.5
1.0
1.5
0.0
2.0
0.5
1.0
Iout (A)
1.5
2.0
Iout (A)
Ripple vs Output Current
Ripple vs Output Current
30
30
25
25
Vin
20
7.0V
8.0V
10.0V
12.0V
15.0V
15
10
Ripple (mV)
Ripple (mV)
Series
5
Vin
20
7.5V
9.0V
12.0V
15.0V
20.0V
15
10
5
0
0
0.0
0.5
1.0
1.5
0.0
2.0
0.5
1.0
Iout (A)
Thermal Derating (Ta)
1.5
2.0
Iout (A)
Thermal Derating (Ta)
(See Note 2)
(See Note 2)
2.0
2.0
70°C
No Derating @ 85°C
85°C
1.5
Iout (A)
Iout (A)
1.5
1.0
0.5
1.0
0.5
0.0
0.0
7
9
11
13
15
8
10
12
Vin (Volts)
16
18
20
Vin (Volts)
Power Dissipation vs Output Current
Power Dissipation vs Output Current
2.0
2.0
1.5
1.5
Vin
7.0V
8.0V
10.0V
12.0V
15.0V
1.0
Vin
PD Watts)
PD (Watts)
14
7.5V
9.0V
12.0V
1.0
15.0V
20.0V
0.5
0.5
0.0
0.0
0.0
0.5
1.0
Iout (A)
1.5
2.0
0.0
0.5
1.0
1.5
2.0
Iout (A)
Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Note)
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
PACKAGE OPTION ADDENDUM
www.ti.com
13-May-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
78ST205HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78ST205SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78ST205SCT
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
78ST205VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78ST233HC
NRND
SIP MOD
ULE
EFA
3
25
TBD
Call TI
Level-1-215C-UNLIM
78ST233SC
NRND
SIP MOD
ULE
EFC
3
25
TBD
Call TI
Level-1-215C-UNLIM
78ST233VC
NRND
SIP MOD
ULE
EFD
3
25
TBD
Call TI
Level-1-215C-UNLIM
78ST235HC
NRND
SIP MOD
ULE
EFA
3
TBD
Call TI
Call TI
78ST235SC
OBSOLETE SIP MOD
ULE
EFC
3
TBD
Call TI
Call TI
78ST235VC
OBSOLETE SIP MOD
ULE
EFD
3
TBD
Call TI
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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