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FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 1
February 2014
FHR1200
Micro-Power, Ultra Wide Voltage Regulator
Features
• Low Operating Current: 12 μA Max.
• Option to Direct Drive Feedback Pin
on PWM Controllers
• Programmable Output: 7.5 V to 100 V
• Wide Operating Temperature Range: -55°C to +150°C
• Output Voltage Accuracy: ±2%
• Excellent Output Voltage Compensation: -30 PPM/°C
• Sink Current Capability: 10 μA to 50 mA
• Small Package: SC70-6 (SOT363)
Applications
• Primary-Side Regulation in Flyback SMPS
• Secondary-Side Regulation in Flyback SMPS
• High Input Voltage SMPS
o Smart Meter
o Industrial Motor Control
o Wireless Infrastructure
• Industrial and Street Lighting LED Power Supplies
Typical Application
Figure1. Flyback Power Supply Secondary-Side Regulation
Ordering Information
Part Number Top Mark Package Packing Method Remarks
FHR1200 FH SC70-6 (SOT363) Tape and Reel 3000 pcs, Reel Size is 7"
INPUT
RECTIFIERS
CAPACITORS
and
BALANCE
TRANSISTOR
SWITCH
PWM
CONTROLLER
FHR1200
OPTOCOUPLER
VAC
IN
VDC
OUT
FB
C3
+
Description
The FHR1200 is a high-efficiency regulator that outper-
forms the typical shunt regulator in applications where
low operating power, wide temperature, and wide voltage
range is important. The regulator also features better sta-
bility and faster response than many existing regulators.
Unlike the LM431 type of part, the FHR1200 can directly
drive a power supply controller thus saving parts count
and circuit complexity in many applications. This also
makes the FHR1200 ideal for non-isolated secondary
side, primary side, and floating regulation. Non-isolated
secondary side regulation saves the cost of OPTOs and
simplifies the power supply design.
The FHR1200 is very flexible and can be used in many
diverse applications. For example: VCC regulators to
>100 volts, small additional auxiliary power supplies, pro-
grammable precision zener diodes (both high and low
power), plus numerous analog circuits.
The FHR1200 is packaged in space-saving surface-
mount SC70-6 (SOT363) to minimize layout space and
cost.
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 2
Block Diagram
Pin Definitions
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.
Thermal Characteristics(1)
Note:
1. PCB Board Size: FR4 76 x 114 x 0.6 T mm3 (3.0 inch x 4.5 inch x 0.062 inch) with minimum land pattern size.
ΨJB test method: T-36 gauge thermocouple is soldered directly to the collector lead pin about 1 mm distance
from package lead.
Figure 2. Internal Connection Figure 3. Device Package
Pin # Pin Name Description
1E
Ground Connection
2 N.C No Connection
3 K Reference Voltage
4 A Ref Bias Pin: Tie R4 to ground to bias; Tie cap to ground for lower noise
5 B Reference Bias Pin
6 C Regulator Output
Symbol Parameter Value Unit
VOUT Regulator Output 100 V
IBIAS Cathode Current 50 mA
PDPower Dissipation TA = 25°C227mW
TJ, TSTG Operating and Storage Junction Temperature Range -55 to +150 °C
Symbol Parameter Value Unit
RθJA Thermal Resistance, Junction to Air 550 °C/W
ΨJB Junction to Board Thermal Characterization Parameter 370 °C/W
1
2
3
6
5
4
E
N.C
K
C
B
A
SC70-6
E
N.C
K
A
B
Pin1
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 3
Electrical Characteristics
Values are at TA = 25°C unless otherwise noted.
Notes:
2. The deviation parameters VREF(dev) and IREF(dev) are defined as the differences between the maximum and
minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the
reference input voltage, TCVREF
, is defined as:
where ΔT is the rated operating free-air temperature range of the device.
TCVREF can be positive or negative, depending on whether minimum VREF or maximum VREF
, respectively, occurs at
the lower temperature.
3. ΔVREF VREF1 - VREF2
ΔVOUT VOUT1 - VOUT2
4. VREF - VOUT
R1
5. VREF2 - VREF1
ICC2 - ICC1
6. For testing: a) hfe typical ~200; b) all resistors are metal film; c) all capacitors are plastic film.
Symbol Parameter Conditions Min. Typ. Max. Units
VREF
Reference Voltage
(Zener + Base Emitter
Voltage)
VOUT = VREF
, Fig. 4,
VCC = 17.3 V,
Accuracy = ±2%,
IZ = 25 μA
R3 = 49.9 kΩ , IREF = 1 μΑ,
R4 = 23.2 kΩ , ICC = 200 μΑ 7.115 7.260 7.405 V
TCVREF
Temperature
Coefficient(2)
VOUT = VREF
,
Fig. 4,
Accuracy =
±2%,
TA = 0 to
+100°C R3 = 49.9 kΩ , IREF = 1 μA,
R4 = 9.53 kΩ , ICC = 200 μA,
IZ = 60 μA, VCC = 10 V
29
PPM/°C
TA = -40 to
+125°C 57
ΔVREF/
ΔVOUT
Ratio of the Change in
Reference Voltage to the
Change in Cathode
Voltage
Fig. 5, VCC = VOUT + 20 V,
IZ = 25μA,
VOUT = VREF +75V,
R5 = ∞(3)
R3 = 100 kΩ , R2 = 53.6 kΩ ,
R1 = 0 | 499 kΩ ,
R4 = 23.2 kΩ ,
ICC = 200 μA, IREF = 150 μA
0.024 0.200 mV/V
IZReference Input Current ICC = 1.0 mA, Fig. 5, VCC = 17.3 V,
R1 = 10.0 kΩ , R2 = ∞, R3 = 100 kΩ , R4 = 499 kΩ ,
R5 = ∞(4)
7.7 12.0 μA
ΔIZ/ΔTDeviation of Reference
IZ Over Temperature 5.45 μA/°C
ΔVREF/
ΔICC
Output Impedance
Fig. 4, VOUT = VREF
,
VCC = 15.4 | 19.4 V,
IZ = 25 μA, f = 0 Hz,
R5 = ∞(5)
ICC = 160 | 240 μA,
R3 = 49.9 kΩ , R4 = 23.2 kΩ 154 300 Ω
enOutput Noise Voltage(6)
VOUT = VREF
, Fig. 6,
ICC = 1.0 mA, VCC = 17.3 V,
VREF= 7.35 V, IZ=25 μA,
R3 = 15.00 kΩ ,
R4 = 28.7 kΩ ,
f = 400 Hz to 100 KHz
CN = n/a, CL = n/a 141.0
μVrms
CN = 0.1 μF, C L = n/a 8.1
CN = n/a, CL = 0.1 μF57
CN = 0.1 μF, C L = 0.1 μF8.0
GBW
(3db) Gain Bandwidth Product
ICC = 1.0 mA, VCC = 27 VDC, VIN = 2 Vp-p,
IB1 = 5 μA, IZ = 25 μA, CG
,CL = ∞, CN = 0.1 μF,
R1 = 23.2 kΩ , R2 = 39.2 kΩ , R3 = 15 kΩ , R4 = 28.7 kΩ ,
R5 = 22 kΩ , VOUT = 12 V, IREF = 200 μA, Gain = -1, Fig. 7
4.47 MHz
SR Slew Rate
ICC = 1.0 mA, VCC = 27 VDC, VIN = 2 Vp-p,
IB1 = 5 μA, IZ = 25 μA, CG
,CL = ∞, CN = 0.1 μF,
R1 = 23.2 kΩ , R2 = 39.2 kΩ , R3 = 15 kΩ , R4 = 28.7 kΩ ,
R5 = 22 kΩ , VOUT = 12 V, IREF = 200 μA, Gain = -1, Fig. 7
18.8 V/μs
TCVREF|( )
°C
ppm =ΔT
(
)
* 106
VREF (TA=25°C)
VREF(dev) (TA): Ambient Temperature
VREF(dev): VREF deviation over full temperature range
ABS
IZ=
ZOUT=
=
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 4
Test Circuit
Figure 4. Test Configured: VREF = VOUT Figure 5. Test Configured: VREF < VOUT
Figure 6. Test Configured: VREF = VOUT
with Capacitance Figure 7. Test Configured: VREF < VOUT
with Capacitance
VCC
+
R3
Iz
Icc
IBIAS
FHR1200
VBE
D1
Q1
IREF
3
5
1
6
VREF
R4
4
V
IN
R5
R1
R2 R4
FHR1200
IBIAS
Q1
D1
IREF
Iz
3
1
5
4
6
VBE
V
OUT
IB1
VREF
VOUT=VREF(1+R1/R2)+(Iz*R1)
Icc
C
C
R3
V
CC
+
R3
R4
FHR1200
IBIAS
CL
Q1
D1
Iz
3
1
5
4
6
VBE
VREF
IREF
Icc
CN
+
VCC
V
IN
R5
R1
R2 R4
FHR1200
IBIAS
Q1
D1
IREF
Iz
3
1
5
4
6
V
BE
V
OUT
IB1
V
REF
VOUT=VREF(1+R1/R2)+(Iz*R1)
Icc
C
C
R3
V
CC
+
C
L
C
N
C
G
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 5
Typical Characteristics: VREF
Figure 8. Test Diagram: VREF = VOUT
(Fixed Value of R4) Figure 9. Reference Voltage vs. Ambient
Temperature (Fixed Value R4, IZ ~ 25 μA at 25oC)
Figure 10. Reference Voltage vs. Ambient
Temperature (Fixed Value R4, IZ ~ 40 μA at 25oC) Figure 11. Reference Voltage vs. Ambient
Temperature (Fixed Value R4, IZ ~ 60 μA at 25oC)
Figure 12. Minimum Cathode Current for Regulation
VCC
+
R3
Iz
Icc
IBIAS
FHR1200
VBE
D1
Q1
IREF
3
5
1
6
VREF
R4
4
-60 -40 -20 0 20 40 60 80 100 120 140 160
6.9
7.0
7.1
7.2
7.3
7.4
ICC = 200 μA
IZ
= 25 μA, R3 = 49.9 K
R
4 = 23.2 K for ICC = 200 μA
R
4 = 28.7 K for ICC = 1 mA
ICC = 1 mA
Reference Voltage, VREF[V]
Ambient Temperature, TA
[oC]
-60 -40 -20 0 20 40 60 80 100 120 140 160
6.9
7.0
7.1
7.2
7.3
7.4
ICC = 200 μA
IZ
= 40 μA, R3 = 49.9 K
R
4 = 14.3 K for ICC = 200 μA
R
4 = 16.5 K for ICC = 1 mA
ICC = 1 mA
Reference Voltage, VREF[V]
Ambient Temperature, TA
[oC]
-60 -40 -20 0 20 40 60 80 100 120 140 160
6.9
7.0
7.1
7.2
7.3
7.4
ICC = 200 μA
IZ
= 60 μA, R3 = 49.9 K
R4
= 9.53 K for ICC = 200 μA
R4
= 10.7 K for ICC = 1 mA
ICC = 1 mA
Reference Voltage, VREF[V]
Ambient Temperature, TA
[oC]
020406080100
6.2
6.4
6.6
6.8
7.0
7.2
7.4
7.6
IZ = 25 μA
IZ
= 10 μA
IZ = 5 μA
IZ
= 2 μA
R
3
= 100 K
IZ
= 1 μA for R4
= 562 K
IZ
= 2 μA for R4
= 287 K
IZ
= 5 μA for R4
= 113 K
IZ
= 10 μA for R4
= 56.2 K
IZ
= 25 μA for R4
= 22.6 K
IZ
= 1 μA
Reference Voltage, VREF[V]
IBIAS [μA]
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 6
Typical Characteristics (Continued)
Figure 13. DC Current Gain vs. Collector Current Figure 14. Common Emitter Output Characteristics
Figure 15. Collection-Emitter Saturation Voltage vs.
Collector Current Figure 16. Typical Forward Voltage
Figure 17. Typical Temperature Coefficient as
Function of Working Current Figure 18. Zener Voltage vs. Applied Current
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 7
Typical Characteristics (Continued)
Figure 19. Power Derating Figure 20. Transient Thermal Resistanc e
0 25 50 75 100 125 150
0
50
100
150
200
250
300
Total Power Dissipation, PD[mW]
Ambient Temperature, TA [oC]
1E-5 1E-4 1E-3 0.01 0.1 1 10 100
1E-4
1E-3
0.01
0.1
1
50%
r(t), Normalized Transient Thermal Resistance
t1, time(sec)
Single Pulse
30%
10%
5%
2%
D=1%
Rthja(t)=r(t)*Rthja
Rthja=550oC/W
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 8
Typical Applications (Continued)
Figure 21. Flyback Power Supply Primary-Side Regulation
Figure 22. Flyback Power Supply Non-Isolated Secondary-Side Regulation
INPUT
RECTIFIERS
CAPACITORS
AND
BALANCE
TRANSISTOR
SWITCH
PWM
CONTROLLER
VAC
IN
VDC
OUT
FB
VBIAS
VCC
VBIAS
FHR1200
INPUT
RECTIFIERS
CAPACITORS
and
BALANCE
TRANSISTORS
SWITCH
PWM
CONTROLLER
FHR1200
FB
FHR1200 — Micro-Power, Ultra Wide Voltage Regulator
© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com
FHR1200 Rev. 1.0.1 9
Physical Dimensions
Figure 23. 6-Lead, SC-70, EIAJ SC-88, 1.25 MM WIDE
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notic e. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor represe ntative to verify or
obtain the most recent revision. Package specifica tions do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the
warranty therein, which covers Fairchild produ cts.
Always visit Fairchild Semiconduct or’s online packaging are a for the most recent package drawings :
http://www.fairchildsemi.com/dwg/MA/MAA06A.pdf.
For current tape an d reel specifications, visit Fair child Semiconductor’s online pac kaging area:
http://www.fairchildsemi.com/packing_dwg/PKG-MAA06A.pdf.
SCALE: 60X
B
1.90
2.00±0.20
0.50 MIN
1.00
0.80
1.10
0.80
0.10 C
0.25
0.10
0.46
0.26
0.20
GAGE
PLANE (R0.10)
30°
0°
SEATING
PLANE
C0.10
0.00
NOTES: UNLESS OTHERWISE SPECIFIED
A) THIS PACKAGE CONFORMS TO EIAJ
SC-88, 1996.
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE BURRS
OR MOLD FLASH.
D) DRAWING FILENAME: MKT-MAA06AREV6
2.10±0.30
0.10 A B
0.65
1.30
(0.25) 0.30
0.15
1
1.25±0.10
3
1.30
0.40 MIN
SEE DETAIL A
LAND PATTERN RECOMMENDATION
6
A
4
C
0.65
L
SYMM
PIN ONE
SC70-6 (SOT363)
© Fairchild Semiconductor Corporation www.fairchildsemi.com
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