VOLTAGE REGULATOR. GL2594 Datasheet

GL2594 REGULATOR. Datasheet pdf. Equivalent


Gleam GL2594
Gleam
Power Management
GL2594
1.5A STEP-DOWN VOLTAGE REGULATOR
Description
GL2594 of regulators provides all the active functions for a
step-down (buck) switching regulator, and drives 1.5A load
with excellent line and load regulation. GL2594's is
available in fixed output voltages of 3.3V, 5V, 12V, and a
versatile Adjustable output version.
These regulators are simple to use and require a minimum
number of external components. Features include internal
frequency compensation and a fixed-frequency oscillator.
The GL2594 is high-efficiency replacements for popular
three-terminal linear regulators, and is requiring a smaller
heatsink or even no heatsink.
GL2594 performs well with standard inductors from
several manufacturers, and simplifying the design of
switch-mode power supplies.GL2594 guarantees 4%
tolerance on output voltage within specified input
voltages and output load conditions, and 15% on the
oscillator frequency.
Features
3.3V, 5V, 12V and Adjustable output versions
Adjustable version output voltage range 1.23V
to 37V ± 4% max over line and load conditions
1.5A output current
Input voltage range up to 40V
Requires only 4 external components
High efficiency
TTL shutdown capability
Low power standby mode, IQ typically 100 μA
Thermal shutdown, current limit protection
Uses standard inductors
150 kHz fixed frequency internal oscillator
External shutdown is included with 100uA (typical)
standby current. The output switch has cycle-by-cycle
current limiting as well as thermal shutdown for full
protection under fault conditions.
GL2594 operates at a switching frequency of 150 kHz thus
allowing smaller sized filter components than what would be
needed with lower frequency switching regulators. Available in a
standard SOP-8F surface mount package.
Application
Pre-regulator for linear regulators
On-card/board switching regulators
High-efficiency step-down buck regulator Positive to negative converter (buck-boost)
TYPICAL APPLICATIONS
Feedback
12V
~ 37V
+VIN
GL2594
5.0
Output L1
+ CIN
100μF ON / OFF GND
33μH + CO+UT
D1 220μF
1N5824
Feedback
12V +VIN GL2594
~ 37V ADJ Output L1
5V/2A + CIN
33μH + COUT R1
100μF ON / OFF GND D1
220μF
1N5824
R2
Output
2A Load
Low Noise APPLICATIONS
Feedback
12V +VIN
~ 37V
+ CIN
GL2594
5.0
Output
100μF ON / OFF GND
L1:15uH
+
L2:0.15uH
+
C1
5V/2A
C2
D1 100μF 100μF
1N5824
Feedback
12V +VIN
~ 37V
+ CIN
GL2594
ADJ
Output
100μF ON / OFF GND
L1:15uH L2:0.15uH
47μH + C1
D1 100μF
1N5824
+
C2
100μF
Output
2A Load
R1
R2 C2
100μF
1


GL2594 Datasheet
Recommendation GL2594 Datasheet
Part GL2594
Description 1.5A STEP-DOWN VOLTAGE REGULATOR
Feature GL2594; Gleam Power Management GL2594 1.5A STEP-DOWN VOLTAGE REGULATOR Description GL2594 of regulators pr.
Manufacture Gleam
Datasheet
Download GL2594 Datasheet




Gleam GL2594
Gleam
Power Management
GL2594
1.5A STEP-DOWN VOLTAGE REGULATOR
MARKING INFORMATION & PIN CONFIGURATIONS
SOP- 8F
GND
GND
GND
GND
8765
GL2594
VVAYYWW
1234
Vin
Vout
ON/OFF
FB
V V, VVV = Output Voltage (33 = 3.3V, 120= 12V, A =A dj )
A = Assembly Location
YY =Year
W W =Weekly
ORDERING INFORMATION (Green Package Products are available now!)
Ordering Number
Output Voltage
Package
GL2594-ASF8R
Adj
SOP-8F
GL2594-3.3SF8R
3.3 SOP-8F
GL2594-5.0SF8R
5.0 SOP-8F
GL2594-12SF8R
12 SOP-8F
GL2594-15SF8R
15 SOP-8F
* For detail Ordering Number identification, please see last page.
Shipping
2,500 Units/ Tape & Reel
2,500 Units/ Tape & Reel
2,500 Units/ Tape & Reel
2,500 Units/ Tape & Reel
2,500 Units/ Tape & Reel
ABSOLUTE MAXIMUM RATINGS
Rating
Maximum Supply Voltage
ON/OFF Pin Input Voltage/ Feed back pin voltage
Output Voltage to Ground (Steady State)
Power Dissipation
Storage Temperature Range
Maximum Junction Temperature
Minimum ESD Rating (C=100pF, R=1.5kW)
Lead Temperature (Soldering, 10 sec.)
Lead Temperature
S Package
Vapor Phase (60 secretary.)
Infrared (10 secretary.)
T Package (Soldering, 10 secretary.)
2 Maximum Junction Temperature
Value
45
-0.3 V +25
-0.9
Internally Limited
-65 to + 150
+150
2
+260
+215
+245
+260
+150
Unit
V
V
V
-
°C
°C
kV
°C
°C



Gleam GL2594
Gleam
OPERATING CONDITIONS
Power Management
GL2594
1.5A STEP-DOWN VOLTAGE REGULATOR
Rating
Temperature Range
Supply Voltage
Value
- 40 TJ +125
4.5 to 40
Unit
°C
V
BLOCK DIAGRAM
Current
Source
Bias
1.235V
Reference
FEEDBACK
R2
+ GM
AMP
R1=
2.5K
Active -
Capacitor
+
OP AMP
3.3V,R2=4.2K
-
5V,R2=7.6K
12V,R2=21.8K
ADJ,R2=0W
R1=OPEN
ON/ OFF
2.5V
Regulator
2.5V
Start Up
+
COMP
-
Current
Limit
-
COMP
+
++
220 220
mV mV
1.5A
Switch
-
COMP
+
Latch Driver
Reset
FREQ SHIFT
150kHz
OSC
Thermal
Limit
VIN
OUTPUT
GND
ELECTRICAL CHARACTERISTICS: GL2594-3.3
(Specifcations with standard type face are for TJ = 25°C,and those with boldface type apply over full Operating Temperature Range)
Parameter
Conditions
Symbol
Output Voltage
Efficiency
4.75 VIN 40V, 0.2A ILOAD 1.5A
VIN = 12V, ILOAD = 1.5A
VOUT
h
Min
3.168/3.135
-
Typ
3.3
73
Max
3.432/3.465
-
Unit
V
%
ELECTRICAL CHARACTERISTICS: GL2594-5.0
(Specifcations with standard type face are for TJ = 25°C,and those with boldface type apply over full Operating Temperature Range)
Parameter
Output Voltage
Efficiency
Conditions
Symbol
7V VIN 40V, 0.2A ILOAD 1.5A
VIN = 12V, ILOAD = 1.5A
VOUT
h
Min
4.800/4.750
-
Typ
5.0
80
Max
5.200/5.250
-
Unit
V
%
ELECTRICAL CHARACTERISTICS: GL2594-12
(Specifcations with standard type face are for TJ = 25°C,and those with boldface type apply over full Operating Temperature Range)
Parameter
Output Voltage
Efficiency
Conditions
Symbol
15V VIN 40V, 0.2A ILOAD 1.5A
VIN = 15V, ILOAD = 1.5A
VOUT
h
Min
11.52/11.40
-
Typ
12.0
90
Max
Unit
12.48/12.60
-
V
%
3





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