LOW QUIESCENT CURRENT PFM STEP DOWN CONVERTERS
PRODUCTION DATA - AUG 13, 2015
Features
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ÿ
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Wide input voltage range 4.5V to 40V
PFM regulator up to 1.33MHz
Up to >92% efficiency
Very low 8µA sleep mode current
Ultra low 12µA standby current
100% duty cycle capability
Small QFN20L4 lead-less package
TSSOP16 package
AEC-Q100 qualification
Junction temperature range -40°C to +150°C
General Description
The E522.01/02/03/04/05/06/07/08/09 product family
provides ultra low quiescent current step down DC/DC
converters with integrated power MOSFET.
The PFM (Pulse Frequency Modulation) regulator allows
outstanding fast line- and load response time, stability
and high efficiency over the full load current range. The
integrated idle detection assures an ultra low idle cur-
rent and high efficiency with low load currents down
to <100µA for the completely powered application. A
power-good signal is provided by a high-voltage open-
drain low-side switch.
The E522.0x buck converter accommodates to common
single supply micro controller applications. Low exter-
nal component count and small QFN20L4 / TSSOP16
package allow compact PCB designs.
Applications
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Micro Controller Systems
Automotive Telematics, Dashboards
Partial Networking
Peripheral Control Systems
Ordering Information
Please find the ordering information in chapter
„10 Product Ordering Information“
IN
C
IN
VIN
PGOOD
Feedback for E522.05/06/09
C
SENSE
PG
R
SENSE2
R
SENSE1
L
LXT
ON
ON
SENSE
E522.0x
OCP
R
LXT
D
OUT
C
OUT
AGND
PGND
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0064E.03
1/25
E522.01, E522.02, E522.03, E522.04, E522.05, E522.06, E522.07, E522.08, E522.09
LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY
PRODUCTION DATA - AUG 13, 2015
1 Functional Diagram
OCP
OCP
Resistor
Driver
IDLE
Internal
Driver
Transistor
VIN
LXT
OC OFF
DRIVER
VIN
ON
OVT
ENABLE
Internal
Supply
PFM
Controller
ACTIVE
IDLE
IDLE
Detector
PGOOD
SENSE
Power Good
Comparator
VOUT
Comparator
E522.0X
SENSE
AGND
PGND
Figure 1: Block diagram
2 Pinout
2.1 Pin Configuration QFN20L4 / TSSOP16
SENSE
SENSE
PGND
Bottom Side
LXT
NC
15 14 13 12 11
NC
10
9
1
2
3
4
5
6
7
8
16
15
NC
LXT
NC
PGND
SENSE
NC
NC
OCP
NC
NC
NC
NC
17
18
19
20
1
NC
NC
NC
AGND
E522.0x
21
2
3
4
5
8
7
6
ON
NC
PGOOD
NC
AGND
E522.0x
NC
16
OCP
VIN
NC
14
13
12
11
10
9
VIN
NC
ON
NC
Pin 1
PGOOD
QFN20L4
Figure 2: Package pinout, transparent top view, not to scale.
TSSOP16
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0064E.03
2/25
E522.01, E522.02, E522.03, E522.04, E522.05, E522.06, E522.07, E522.08, E522.09
LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY
PRODUCTION DATA - AUG 13, 2015
2.2 Pin Description
Table 1: Pin Description
Pin
QFN20L4 TSSOP16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
2
1
4
3
6
8
5
7
10
9
-
12
11
13
15
14
16
-
-
-
-
Name
Type
1)
Description
Remark
bypass to GND
with a low ESR ca-
pacitance >20µF
Open or GND
Open or GND
VIN
NC
ON
NC
PGOOD
AGND
NC
NC
NC
OCP
SENSE
SENSE
NC
PGND
LXT
NC
NC
NC
NC
NC
EP
HV S
-
HV AI
-
HV AO
S
-
-
-
AI
AI
AI
-
S
HV AO
-
-
-
-
-
-
High-Voltage Supply input
Not connected
High-Voltage input to enable converter
Not connected
High-Voltage capable low-side open-drain
output for
power good flag
Signal ground connection
Not connected
Not connected
Not connected
Over-current protection resistor input, con-
nect to ground via resistor
Feedback input for converter regulation,
connect to output voltage
Feedback input for converter regulation,
connect to output voltage
Not connected
Power ground connection
Integrated high-side switch output, con-
nect freewheeling diode and inductor to
this pin
Not connected
Not connected
Not connected
Not connected
Not connected
Exposed die pad
Open or GND
Open or GND
Open or GND
Redundant, con-
nect both SENSE
pins
Redundant, con-
nect both SENSE
pins
Open or GND
Open or GND
Open or GND
Open or GND
Open or GND
Open or GND
Connect to GND
1) D = Digital, A = Analog, S = Supply, HV = High voltage (see max. ratings), I = Input, O = Output
Note: Pins with identical names have to be connected.
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0064E.03
3/25
E522.01, E522.02, E522.03, E522.04, E522.05, E522.06, E522.07, E522.08, E522.09
LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY
PRODUCTION DATA - AUG 13, 2015
3 Absolute Maximum Ratings
Stresses beyond these absolute maximum ratings listed below may cause permanent damage to the device. These are stress
ratings only; operation of the device at these or any other conditions beyond those listed in the operational sections of this
document is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
All voltages referred to V
GND
. Currents flowing into terminals are positive, those drawn out of a terminal are negative.
Description
Supply voltage at pin VIN
Voltage at pin ON
Voltage at pin PGOOD
Current at pin PGOOD
Voltage at pin SENSE
Voltage at pin OCP
Voltage at pin LXT
Power dissipation (E522.01-06)
Power dissipation (E522.07-09)
Storage temperature
Condition
Symbol
V
VIN
V
ON
V
PGOOD
I
PGOOD
V
SENSE
V
OCP
V
LXT
P
TOT
P
TOT
T
STG
Min
-0.3
-0.3
-0.3
0
-0.3
-0.3
-10
Max
40
40
40
5
6
0.8
V
IN
+0.3
500
1
Unit
V
V
V
mA
V
V
V
mW
W
°C
-50
+150
4 ESD Protection
Description
ESD HBM protection at pin VIN
ESD HBM protection at all other pins
ESD CDM protection at all pins
ESD CDM protection at corner pins
1) According to AEC-Q100-002 (HBM) chip level test
2) According to AEC-Q100-011 (CDM) chip level test
Condition
1)
1)
2)
2)
Symbol
V
ESD(HBM)
V
ESD(HBM)
V
ESD(CDM)
V
ESD(CDM)C
Min
3
2
500
750
Max
Unit
kV
kV
V
V
5 Recommended Operating Conditions
Description
Junction temperature
Ambient temperature
Supply voltage at pin VIN
1) For V
VIN
< V
OUT
, E522.0x enters 100% duty cycle mode
2) For junction temperatures > 150°C thermal shutdown may occur
Condition
2)
Symbol
T
J
T
amb
V
VIN
Min
-40
-40
4.5
1)
Max
+150
+125
40
Unit
°C
°C
V
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0064E.03
4/25
E522.01, E522.02, E522.03, E522.04, E522.05, E522.06, E522.07, E522.08, E522.09
LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY
PRODUCTION DATA - AUG 13, 2015
6 Electrical Characteristics
(V
VIN
= 4.5V to 40V, T
amb
= -40°C to +125°C, unless otherwise noted. Typical values are at V
VIN
= 14V and T
amb
= +25°C.
Positive currents flow into the device pins.)
Description
Supply
Sleep mode
quiescent current
Active mode
quiescent current
Active mode
quiescent current
Input resistance at pin ON
Threshold voltage
at pin ON
VIN Undervoltage Lockout
Output Current Limit Programming
Output voltage at OCP
OCP Selection Resistor
Load capacitance at OCP
E522.01 Output
Output regulation threshold
1)
On Resistance at LXT
Over-current detection
E522.02 Output
Output regulation threshold
1)
On Resistance at LXT
Overcurrent detection
E522.03 Output
Output regulation threshold
1)
On Resistance at LXT
Overcurrent detection
E522.04 Output
Output regulation threshold
1)
On Resistance at LXT
Overcurrent detection
I
OUT
= 350mA
V
VIN
= 14V
V
VIN
= 14V
R
OCP
= 24kΩ
2)
R
OCP
= 60kΩ
2)
V
OUT
R
DS(ON)
I
OCP,24kΩ
I
OCP,60kΩ
490
190
3.2
3.33
1.1
550
230
3.46
2.5
610
270
V
Ω
mA
mA
I
OUT
= 350mA
V
VIN
= 14V
V
VIN
= 14V
R
OCP
= 24kΩ
2)
R
OCP
= 60kΩ
2)
V
OUT
R
DS(ON)
I
OCP,24kΩ
I
OCP,60kΩ
490
190
4.8
5.0
1.1
550
230
5.2
2.5
610
270
V
Ω
mA
mA
I
OUT
= 500mA
V
VIN
= 14V
V
VIN
= 14V
R
OCP
= 24kΩ
2)
R
OCP
= 60kΩ
2)
V
OUT
R
DS(ON)
I
OCP,24kΩ
I
OCP,60kΩ
740
300
3.2
3.33
0.7
830
350
3.46
1.5
920
400
V
Ω
mA
mA
I
OUT
= 500mA
V
VIN
= 14V
V
VIN
= 14V
R
OCP
= 24kΩ
2)
R
OCP
= 60kΩ
2)
V
OUT
R
DS(ON)
I
OCP,24kΩ
I
OCP,60kΩ
740
300
4.8
5.0
0.7
830
350
5.2
1.5
920
400
V
Ω
mA
mA
24kΩ ≤ R
OCP
≤ 60kΩ
V
OCP
R
OCP
C
OCP
24
500
60
100
mV
kΩ
pF
V
ON
= 0;
non-switching
V
ON
= V
VIN
> 8V;
I
OUT
< 100µA
V
ON
= V
VIN
L
XT
driver OFF
V
ON =
V
VIN = 14V
V
VIN > 4.5V
V
VIN
rising
I
VIN,q,SLP
I
VIN,q
I
VIN,q
I
ON
V
ON,th
V
VIN,UV
1.40
8
12
150
7
1.48
3.5
1.56
4.2
µA
µA
µA
MΩ
V
V
Condition
Symbol
Min
Typ
Max
Unit
1) Given value is switching threshold at pin SENSE, for V
VIN
< V
OUT
regulator provides 100% conductance mode
2) Measured at V
VIN
= 14V
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0064E.03
5/25
E522.01, E522.02, E522.03, E522.04, E522.05, E522.06, E522.07, E522.08, E522.09
